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 familys 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 hasnt been successful as she seems to be constantly intimidated by him.