I'm the Hero, but the Demon Lord's Also Me, Vol. 2

Ordinary (?) high schooler Yuuma Tsugari possesses the power of both thehero and
the demon lord, and so far, it-s caused him nothing buttrouble! Frequent visits from
otherworldly guests are one thing, but now, theprincess''s younger sister and the
Demon General are at each other-sthroats, and their rivalry-s just getting started! Will
Yuuma ever beable to have a normal life again?!