Ryuou Aikawa

He is an elementary school boy, son of the Aikawa family who moved in next door to the Saeki family. Although he pretends to be calm, he is actually not good with dogs and is always afraid of the Saeki family's pet dog, Goromaru, but is confused by the fact that Goromaru likes him. He met Kazuko about three years ago and has had feelings for her ever since. Since they met again, he has been aggressively approaching Kazuko with the sole intention of making her fall in love with him, but it hasn't been successful as she seems to be constantly intimidated by him.