imo they should've went ahead with nariyuki treating mc as a replacement and then extend the volume to at least 3 volumes so that way it ends up nariyuki falling in love with him as an adult, not when he was still a child.
and just so we're clear here mc isn't a minor in the present, he's in college which is usually 18-19y.o. it's probably a case of mistranslation because what he meant to say there was he was not of legal age to drink in Japan which is 21y.o.
imo they should've went ahead with nariyuki treating mc as a replacement and then extend the volume to at least 3 volumes so that way it ends up nariyuki falling in love with him as an adult, not when he was still a child.
and just so we're clear here mc isn't a minor in the present, he's in college which is usually 18-19y.o. it's probably a case of mistranslation because what he meant to say there was he was not of legal age to drink in Japan which is 21y.o.