Tsutomu Yamaguchi

Оригінальне ім’я: 山口ツトム,

Mikako's friend from early childhood who lives next door, also goes to Yazagaku. He has been in love with Mikako for a long time. He searches for his passion and a hobby, eventually becoming an apprentice to Mikako’s father and learning to be a photographer. He bears an eerie similarity to Ken Nakagawa, a character from "Tenshi Nanka Ja Nai”, who is also the lead singer of the popular band Manbou - often leading to several accounts of rabid fangirls and mistaken identity. He is frequently referred to as a monkey (usually by Mikako). He forms Akindo, a street market shop/club, with Ayumi and the others. He also appears in "Paradise kiss" as Yukari Hayasaka's photographer.