Story #1 2B (Nier: Automata): They discover a hidden program called "sexual pleasure" and decide to try it out at a party they met.
Story #2 Tsunade (Naruto): Naruto will fulfill his master's dream... to stuff Tsunade like a turkey at Christmas.
Story #3 Nobara (Jujutsu Kaisen): After defeating Sukuna, they reunite with Itadori, and after celebrating, they start having sex like rabbits.
Story #4 Tsuki Uzaki (Uzaki-chan): Hana suspects her boyfriend is cheating on her, so she asks her mother to test him, but certain circumstances lead them to have very passionate sex.