تسیوتومیو یاماگیوچی

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.