Kusumegi Itsuki

"If you act for someone else, both you and everyone else can be happy" is the motto. Honest and pure, but one could also say that he is naive. Due to the "customs" of his "family", he has a fiancée whose name and face he does not know. The identity of this person is to be revealed on the day of Itsuki's 17th birthday -— his "blessing" day. Itsuki himself accepts the existence of his fiancée as something natural, and he spends his high school life without interest in romance because "there is someone already decided". He relies heavily on his childhood friend Amaha Nene, who is also part of the same "family", and is the first person he consults when he has trouble.