Myusca

Myusca is a succubus fought in the collab Collab Scenario. She comes from Succubus Prison: House of Lewd Demons with Nemea and Vinum. She's a cruel succubus that enjoys driving her preys to despair before eating them. She is the boss of chapter 2

Biography
She first contacts Kazuya and several other people via telepathy to tell them that she will chase them all to devour them as several men are imprisoned in a house. She herself shows up in the flesh midway when Kazuya regrouped with Hakunen, and proceeds to suck dry a youth the party came across. She then starts chasing them, forcing them to run away. When she ends up following them in a room where several people took refuge, she drains a few persons before leaving everyone else, temporarily satisfied.

The party then meets her after encountering the White Rabbit, and is forced to fight her. The party barely manages to scratch her when the Proof of Collaboration on the back of her hand reacts.

She shows up again at the end of chapter 6 when the party is about to escape, surrounding them with the support of Vinum and Nemea. Fortunately, they are saved by the intervention of Magatsu, Lauratt and Rigeo.

Before the succubi leave, Kazuya asks why Myusca has the Proof of Collaboration on her hand. She answers that she got it when she arrived, before being corrected by Vinum who reminds her that she got it from her first victim who was supposed to be the hero of their world, which surprise the succubi as he was incredibly weak. The succubi taunt the heroes as they're now down to six, but Kazuya tells them that he's determined to find a solution.

The trio reappears in chapter 8 as Kazuya and his group are fleeing Fulbeua and Musette. They chase the party and force them to go underground. After Vinum fights the group, a full fight blows out as Luka and his allies step in and rescue Kazuya's group from the Succubus trio. The situation becomes even more chaotic as Mysteltainn, Ogretooth and Executioner show up while chasing Lest and his companions. As they fight, Myusca ends up caught by one of Daimyokai's trap, and while she tries to break free, Vinum tells her to stop trying. The heroine accompanying Luka notices that both groups seem to be too wary of each other to work effectively, point upon which Vinum concedes. Eventually, the groups negociate the succubi' retreat and have Myusca give out the Proof of Collaboration to Luka before leaving.

They reappear during the banquet between the members of the alliance of the queen of dreams, as Musette is furious that they let the heroes go while they have their own agendas. The succubus trio tries to attack another village in chapter 12, but is then intercepted by either Eden, Zion and Gnosis on Alice's route while they're engaged in a fight by Lilith, Astaroth and Morrigan on Ilias'.

Recruitment Arc - Seven Trials
After having recruited Daimyokai, Luka and his companions hear rumors that the Succubus Prison trio is back in Finoa for more mischiefs. When he arrives on site, he gets the confirmation that they took control of a home and didn't kill anyone yet.

When Luka and his companions enter, they are greeted by Myusca's voice that tells the party that they have to face the Seven Trials if they want her and her companions to leave this village alone. Nemea take the opportunity to make another move on Hakunen, while Vinum says that she expects a good show from the heroes.

The party reaches a first challenge, which is a door that will open if people have sex in the next room. Daimyokai makes a move on Hakunen, but before they can do anything Magatsu takes the lead and brings the reluctant Hakunen into the room. After a few seconds, a female moan echoes through the room, informing the people waiting outside that the duo has done the deed. The party enters to see an exhausted Hakunen lying on the bed and Magatsu sitting at a table. The oni says that she enjoyed that little break, even as Hakunen is too flustered to say anything. The party remains awkwardly silent, and decides to move on.

The party reaches a second challenge which is the same as the first, but Myusca tells them that they can't beat it with the same pairing, to Magatsu's displeasure. Sensing a pattern, the heroine decides that pairs must be formed. The heroes end up pairing with their own partner, save for Lest who is alone and Kazuya who is stuck with both Lampas and Mukuro. Rigeo ends up volunteering with Lauratt, saying that even if they didn't do it yet, she's still a Nightmare and such a thing is inevitable, and besides, it would reinforce their contract. The duo enters, and the party hears a first moan, soon followed by a second one, surprising them. Rigeo comes out of the room panting heavily, apologizing as the duo got carried away a bit.

After progressing through the labyrinthian house, the party reaches a room with a karaoke machine. Myusca informs them that the next challenge is a "Handjob Karaoke", where a singer must mark a score of 90+ on a machine while receiving a handjob from a clone of Tarsa summoned through the "Mirror of Truth". Fortunately, they're hidden from the public by a screen.

Hakunen is the first to give it a try, and while Rigeo feels bad for him and Magatsu as he gets tormented, the latter enjoys the show a great deal. He ends up failing hard with a score of 45. The next one who gives it a try is Kazuya, who hopes that his experience with Nina's "Reverse Rape Show" will help him carry through. However, he ends up with the pathetic score of 36. The next one who tries is Lest, who scores 38 to the shame of Kazuya who did even worse. Last, Luka gives it a try and ends up with 29, and gets vocally blasted by the heroine for scoring the weakest result.

As the party tries to think out a plan, Daimyokai tells them that she noticed a loophole: If they must sing while receiving a handjob from the Tarsa clone, there's no rule about beating her. The projection is aghast as she realizes the yokai hunter is entirely right. The party proceeds to beat the succubus clone down into oblivion, displeasing Myusca who wonders if they can really call themselves heroes. She accepts their action, but tells them that they must still score 90+ on the karaoke machine and that violence is forbidden for the next trials. Even then, the party members still fail, and the heroine accompanying Luka decides to bring in Saki as a desperate measure. The succubus idol successfully beat the challenge with a score of 99, allowing the team to pass through. Just before the party leaves, they grab the "Mirror of Truth" which can be used to recruit Fulbeua.

Further into the labyrinth, the party reaches yet again another challenge where two people must have sex to open the next door. As people are more reluctant, Mukuro and Lampas engage in a tug-of-war to keep Kazuya away from one another. The party decides to draw straws, and Novissa and Tarsa get the short one. The dancing priestess switches to her succubus form before the duo enters the room, and, the next minute, the party hears a female moan, then another one, then a few more in quick succession. They enter in a precipitation to see Novissa sucked almost dry lying on the ground, and an enthusiastic Tarsa saying that she wishes they could continue going at it. The party brings her back to her senses, and continue.

The fifth challenge is once again, to nobody's surprise, a room where two people must have sex to open the next door. This time, Kazuya end up drawing the short straw, but Lampas and Mukuro engages once again in a silent tug-of-war, threatening to tear apart the poor man in the process. Realizing the issue, Luka's companion forces the two monsters to once again draw straws to find out who will go in with him, and Lampas wins. However, just after the duo enters the room, Mukuro follows them, to everyone's surprise. The party then hears rapid-fire female moans, and once again enters hurriedly to see a decomposed, ghastly Kazuya lying down on the ground between Mukuro and Lampas, with both monsters saying that they've been careful and accusing the other one of taking too much from him. After a small minute of helping the man recover, the party continues deeper into the labyrinth.

The sixth challenge is a repeat of the others, which is lampshaded by the heroine accompanying Luka. Myusca remarks that they did with what they had and enjoyed. This time, Lars and Rovissa end up drawing the short straw. However, Rovissa gets cold feet and leaves the party, meaning that only Luka and his companion can complete the challenge. However, Sonya butts in and tells that, as Luka's childhood friend, she should be the one accompanying him. Sparks start flying as Ilias/Alice end up accusing the priestess of being a load, but the latter remarks that they're also clinging on Luka and don't have the right to grab him more than anyone else.

Hild, Nuruko, Spider Princess, Chrome, Eva, Alicetromeria/Eden, Lucifina-Chan/Morrigan and the Four Spirits also bring their grain of salt in, saying that they could all complete the challenge with Luka. Luka's companion notice they reached a dead end. She decides that they must get in the room to fix their disagreement and choose who will be his partner. The discussion instantly degenerate in a violent free-for-all battle royale as Luka's allies attack each other, breaking both doors in the process. Luka and the other heroes only enter when the fighting dies down, and only Alice/Ilias remains standing as the other companions have been knocked down around the room. As she says that she's ready and willing to take the hero, Luka notices that they don't have to do it as both doors are now open because of all the fighting. The heroine is extremely disappointed, just like Myusca who asks loudly how the heroes can really call themselves that when they keep cheating and breaking down her trials.

A few minutes later, the party finally arrives in front of the trio of succubus. Myusca and Vinum say they enjoyed the show, even if they're a bit disappointed that the heroes cheated twice. Nemea doesn't care, as she makes another pass to Hakunen which creeps him out and angers Magatsu. To the surprise of absolutely nobody, Myusca announced that the seventh challenge is to take down the trio of succubi, engaging Luka and his companions in a fight.

After they've been beaten down, the three succubi surrender, and accept to join the party when Ilias/Alice tell them that they have to make up for their debt. Nemea makes one final pass at Hakunen, telling him that she dreams of eating him, and Vinum remarks that just because they're allies doesn't mean that they shouldn't be wary of each others.

Monsterpedia entry
"A being who arrived from another world. Further Details are unknown."

Attacks

 * Attack
 * Artemis Grave
 * Full Charm Bow
 * Instant Caress
 * Whirlwind
 * Kiss of Ecstasy
 * Delightful Hand Job
 * Hecto-Deep Blowjob
 * Breast Squeeze
 * Energy Drain
 * I'll Eat You All At Once
 * Demon Eyes of Seduction

Chapter 2
The party is extremely limited to this fight. Kazuya and Hakunen should focus on damage dealing, while Lampas and Dream Fox are better remaining as support.

Any build for Kazuya can do, although keeping the gun specialization and switching job to God's eye gives access to Saint Rose, which does extreme damages to Myusca. It is the same for Hakunen and Saint Fist.

As tempting as it can be to use Dream Fox's talismans, keeping her on support duty is important. "Song of Mahobora" will prevent status effects and keep your party mostly active, "Song of Cicada" and "Song of Defense" will limit damages and limit Myusca's recovering through the fight, and "Song of Offense will help end the fight faster than if talismans were used, while "Song of Energy" will help your SP dependant team to keep using their skills reliably.

Healing is to be done by Lampas on a "need" basis.

Real battle
The final fight against the three succubi is a relatively tough one. All of them possess a large number of party-wide status effect, high-damages attacks, and ways to heal themselves if not the whole party. Without resistance to climax, losing your whole party in the first turn in a dangerous possibility. Their attacks aren't limited to pleasure and wind, which means that you can't simply hope to reduce this fight to a cakewalk by bringing resists to both. Fortunately, as they have limited auto-hit attacks, evasion and magic evasion/reflection is a valuable defensive option.

Your main target should be Nemea. Between her disruptive wave and her mass mega heal, she is the biggest source of annoyance for this fight. She presents an unusually weakness to ice, but holy attacks have a bonus against all three, while earth damage is also quite strong, although it only does normal damage against Vinum. Setting combos over several turns is too risky to be worth it.