Tsutsui Hikari (a.k.a"Tsuttsun") is just a high school student who's quite happy with his virtual life of all anime and video gaming. 1 afternoon he has stuck cleaning the swimming pool with Iroha, a true live girl who's stylish, sassy and known to be easy with boys... and she aggressively plans him! Tsuttsun, who has few good close friends and resides in their own world, finds himself smitten by the confident and crazy Iroha... and also his whole world is turned upside down down!! It's the awkward and romance story of a boy who adventures relationship for the first time.