Gotta flirt to save the world!! High schooler Takuma Akutsu is terrified of human contact and just wants to live a quite life. Too bad he doesn't have a choice in the matter when nine Valkyrie sisters come barging into his home! They've tasked him with raising their level to fight off the monsters threatening humanity—and how will he do that, exactly...? By gettin' down & dirty to the max!!!

(Source: Yen Press)

Included one-shot:
Volume 9: Val x Love (pilot)