At this point, i am rooting for the classmate girl more than the twins.
new girl probably his long lost imouto or something. we shall see.
but still, rip Mio, I think the author didnt do the scene justice when she got rejected by protag. not sure why the protag is being so passive. the youth thing is so pointless.
He has a mission, to find out the truth of the twins(if they are actually his future wife). Vol.5 is the final volume i believe, so why do i suspect the amount of derailment leads to it getting axed.