Sheep Sisters/LustGrimm Again

Sheep Sisters (シープ姉妹 Shīpu shimai) are the third boss of LustGrimm Again, found in Daydream Tower.

Profile
''Two ovine high-class succubi who attack their prey as a pair. The green-haired sister is the older one, and the sisters are so friendly that they've never had a fight. They apparently like being in high places, and they like to squeeze out all the semen from lost humans.''

Quote when using Observe: Older Sheep Sister (I'm wondering about 『Sheep Sisters in Wonderland』...) Younger Sheep Sister (I'd like to play a game with my Sis in the main role...)

Strategy
Sheep Sisters do nothing on their first three turns. On their fourth, they use Double Breast Press, their most dangerous skill, which hits 5 times and can inflict Breast Addict. Moreover, they perform this move before you perform your action for that turn. On the turn before they use this, make sure you're at full Vigor and 0 Lust, and use the Resist skill.

Sheep Sisters are weak to Chest attacks, so use these to defeat them. Avoid using Thrust skills, both because these don't exploit their weakness and because these cause them to retaliate with Grind Counter.

Additionally, Sheep Sisters are one of the few enemies capable of going into heat (by using a skill which damages them slightly), which increases the damage they deal and the damage they receive. If they are near 0 Vigor, you could exploit this by focusing on attacking them. Otherwise, it may be safer to focus on defending yourself until the status wears off.

H-scenes
Sheep Sisters have four H-scenes for when the player loses to them: giving Magrut a double titjob for the first time, giving Magrut a double titjob again, riding Magrut simultaneously for the first time, and riding Magrut simultaneously again.