Having to pretend to be Kazuma is like getting cucked in spirit, since any romance will be towards "Kazuma", not you.
And the MC thinking "Let the real Kazuma fix this, when he's back" just shows how sleazy the MC is, acting like a temporary stand-in, you're just fluffing them up for another dude.
And the MC thinking "Let the real Kazuma fix this, when he's back" just shows how sleazy the MC is, acting like a temporary stand-in, you're just fluffing them up for another dude.