i don't know where mangaka usually post announcements of the next volumes, but has news of a volume 5 been leaked yet?

some one says "on volume four ayane will choose the other guy instead of the MC cause she owes him a lot of money and the gf will get preggy with another guy(the ex)"

but we are 1 chapter away from volume 4s end so i checked the raw. ayane is still an open option and GF is not pregnant (that she knows yet).

in the original "blush" the GF "finds" a pregnancy test (can it be her own if she finds it?). she see's the results and then it ends. so even then, he is jumping to conclusions.