Funny how no one even bother with gun...
I mean as an assassin clan, there is bound to be someone who train with gun combat art.
Or the white suit guys can also sport some firepower.
There is a novel written(?) and illustrated by this mangaka.
In it, the MC got repeat a day power so he used it to dogeza girls until sex happened.
So... same guy, multiple girls. This doujinshi is just a what if MORE girls scenario.