I also just now seemed to notice more odd parallels to Shinobu and Sakura in these recent chapters.
Sakura was crying because of Shinobu. Fuckboi confesses and sexes her.
Shinobu brought up Sakura and looked sad. Fumi confesses and sexes him.
Both characters are with with a sex scene scenario. Both unsure of what to do.
Sakura affirms herself and gets that assurance from Mio.
Shinobu gets that inspiration from Ryusei to make adjustments.
Both at some point think of the other fondly. Makes this ending all the more curious.