Aikagi 3

Yuuto arrives home and pauses at the door. His childhood friend Saotome Ai — one year his junior — has let herself in again with the spare key she has been refusing to return. She is relaxed on the couch, scrolling on her phone, completely at ease in a home that is not hers. She greets him warmly. He asks, as he has asked many times before, that she not do this. He asks again for the key. She smiles. The love story of a patient senpai and his incorrigibly mischievous kouhai begins with this key — the AIKAGI — as its central object.