Responses
I was asking myself that all chapter ╮(￣▽￣)╭
he's a kid Nitta met at a bookstore (entire both try to grab the same book trope) who will now come and create trouble for the budding relationsship between Nitta and Mr.Slit Eyes
A flirt who is interested in the policeman Nitta, he seems shady though. They met at bookstore. http://www.mangago.zone/read-manga/shuchu_ni_otoshite_iidesuka/uu/mpn_chapter-1997316/pg-15/
been a long time since i last read this... who is arima?