From pure love, to dirty shaming. How sad.
Wait shaming? Where? Huh? If you're talking about the last page it was some cute harmless teasing, you know something that happens between friends and lovers all the time and is normal. It was a cute way to reconnect with her friend that she hadn't seen in forever, there was no shaming and it was never meant to be serious because of course Sato had her period by highschool.
I swear the things people on here see as "shaming" or "abuse" often frightens me.