Tried the the game today, well it is decent, but not great. It has room for improvement. Would be hella interesting if the NTR rivals moves actively and tries to steal the gal by themselves. Haven't seen any game like that aside Heartful Maman.
Another point is the relationship between MC and Ryoka seems kinda, meh. The MC really lacks affections for Ryoka and Ryoka doesn't even confess or act really passionate with MC or anyting. Like, yeah sure she is a hot childhood chick. It's a shame I can't get her pussy, but well w/e not like I would be miserable or anything. Thus the NTR is there, but really, really weak. Heck in Masaru Route when Ryoka says "I'm Sorry", I was like, you sorry wut girl? Might be just me tho.
But well, all in all the game is not bad at all.