if you're talking about the 1st volume, if i remember correctly, they both agreed on waiting till hazuki was 18 & a highschool grad. From then on, his 18 and up.
bit again, i don't remember correctly, it's my vague memory
As I remember it hazuki was 17 in vol one and was right about to turn 18 when he was actively pursuing a 21 yr old naoto. They had sex after he hit 18 and didnt marry until hazuki was in college and they had their 1st son together around that time too. So technically he wasnt a minor and their age gap is only 2 or 3yrs.
Still tho it is easy to forget that our alpha was a student for the short period they dated and that he was stupidly aggressive in his pursuit of his partner. Ngl given the start of their relationship, naota's trauma, and the fact that they were so young to have kids and marry, its almost insane that they're so healthy and are such good parents
thank you
am i tweaking or is the alpha boy like still a minor when they do it, is this allowed or did he turn 18 still dont rllt feel right and i feel like we are skimming past that hes a student