I'd assume that it's just Yukiho's shyness being not quite compatible with extensive anal play.
It's kind of interesting that it's clearly Yayoi and Haruka together here, but in the chapters closer to the "present", it's Haruka with Miki. (Presumably that contributes to Yayoi's uneasiness/teasing at the end there.) You rarely see fan artists or writers posit a dating history like that, even in their secondary characters, unless it's a canonical relationship that has to be broken up for their ship to work.
last edited at Jun 29, 2021 1:28AM