2: Sealed Room Breed

The final answer is: $\boxedThere isn't much information on "Sealed Room Breed 2" general information was provided$

A "positive" ending achieved through high affection or specific non-aggressive interactions. Sealed Room Breed 2

The story takes place after the events of the first series. The main character, Kyouya, has grown up and is now a successful businessman. However, his life is turned upside down when he receives a mysterious letter from his past love, Ritsuko. She informs him that she has been experimenting with a new breed of humans, one that possesses supernatural abilities. The final answer is: $\boxedThere isn't much information