Yakuza no Oshigot

Yakuza no Oshigot is a Manga/Manhwa/Manhua in (English/Raw) language, COMEDY series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.com fastest updating comic site. The Summary is

Young head, Ken Kaneshiro (39) goes to an idol concert and becomes a fan of one of the idols there.