Gekko no Sword Breaker - Minato Hen

Modern time. The largest machine product company "Imperial Heavy Industries" gets the control share of "Automata" and starts producing cyborgs for households. High school student Yuto gets caught up in an automata runaway incident, but soon the third-generation automata Nova saves his life. Yuto was taken to Nova hideout and given a serious assignment - to fall in love with five school idols to defeat "Mugen Tukuyomi". First target is student council president Minato.

[From vndbreview]