Уодзумі Рікуо

Rikuo is a university graduate who has a passion for photography, but lacks motivation to find a career in life. He works part time at a convenience store to pay for his rent and living utilities. Rikuo has feelings for Shinako ever since their university days.

He works at Nico2 Mart four days a week. Haru claims that she knew him for a long time, but he has no recollection of her. He has a past that he doesn't want to remember. He consistently treats Haru coldly, saying he doesn't know her or want any part of her, despite actually being unable to get her off his mind.

(Source: Yesterday wo Utatte Wiki)