If the guy's little sister doesn't turn out to be the heroine then I'd be genuinely shocked, since this seems to be a common trope in the whole 'otome game reincarnation' genre.
This manga took a turn so quickly that I'm getting whiplash. I don't mind authors exploring more serious themes but the pace doesn't give the reader any time to adjust to the new tone.
This doesn't seem like the kind of manga that would get a harem ending, nor would I want it to be, but I do like both Bandai and Tomi and it's a shame that one of them is going to have their heart crushed.
Pretty funny to see everyone in here freaking out about the FMC and her family when MC-kun has shown that he's capable of being just as heavy/off. Previous chapters have had him reciprocate more than willingly, and in this chapter he can tell the difference between FMC and her identical twin by...
@TrueGoddessReincarnation speaking as an older brother, I care less about the appearance of the person dating my sister than whether he's a good person or not.