While all of Yuzu’s thoughts are focused on what Mei’s kiss was all about, she falls into a fountain and takes Mei with her, and ends up in an even more inimate situation when they bathe together. Yuzu thinks about how Mei’s skin feels, Mei is pressing her against the wall, as if she could read Yuzu’s mind. However, it’s too much contact too quickly; Yuzu is again flustered by her little sister.
At school, Yuzu continues to make no effort to follow the dress code, and notices many of the girls are paired up, holding hands and flirting. Harumi says since most of them are already engaged, it’s more a matter of “being in heat” and fooling around while they still can; lust, not love. Their chat is interrupted when Harumi notices the chairman, Mei’s grandfather, is at the gates.
Yuzu brashly approaches him and calls him “gramps”, but he’s having none of it, turning to Mei and reaming her out for allowing “such a fool” to be near school grounds. Yuzu sticks up for her sister, but is banished from the grounds. Either Gramps didn’t get the memo about the marriage, or worse, he doesn’t care; doesn’t see Yuzu as real family.
While sneaking back in, Yuzu and Harumi spot Mei’s betrothed in the parking lot, and overhear him talking to his girlfriend about how he doesn’t really care about Mei, and will only string her along because her family is rich. It’s an awfully specific phone convo for a guy to have out in the open just when Yuzu happens to hear it, but it also shows what a jerk this guy is.
Yuzu tells Mei about her fiancee’s infidelity, but Mei, not surprisingly, already knows, and, well, she’s not fine with it, but she clearly seems resigned to proceeding regardless. She also dismisses Yuzu’s “big sister” status in this issue, since she’s never kissed anyone and thus can’t possibly understand. Yuzu only seems to make things worse the next day when she hijacks a school assembly to tell everyone how she saw the teacher forcing himself on Mei.
That little stunt leads to the chairman sending men to pick Mei up from Yuzu and her Mom’s and having her live with him from now on; Yuzu’s mom says Mei didn’t resist. When Yuzu confronts Mei, Mei pretends nothing is amiss. When Yuzu presses, Mei tells her she’s been ordered to stay away, and that’s how it is.
Yuzu doesn’t stay away. She can’t sleep in the empty room without Mei, knowing there’s clearly something bothering her (what with the crying in her sleep) and she can’t stand feeling partially responsible for her mom’s pain. So she goes to Mei’s grandfather’s mansion and confronts her again, bringing up the pained looks and cries for her father in her sleep.
Mei gets violent, tossing Yuzu on the bed and tearing her blouse. As tears fall from Mei’s eyes to Yuzu’s face, Yuzu gets up and takes hold of Mei, saying “I’m with you now!”, which seems to have an effect. Alas, their grandfather enters the room and expels Yuzu right then and there.
While shopping with Harumi (who is in Full Glamorous Gal Mode outside of school), a very forlorn Yuzu finally tells her friend about her and Mei being related and her expulsion (though doesn’t mention how Mei has kissed her and pushed her into walls and onto beds).
Harumi tells her that despite Mei’s demeanor Yuzu’s feelings on wanting to protect her are probably getting through to her, but that gets Yuzu thinking about what her feelings for Mei truly are, and whether they’re love, something she’s never experienced before. It certainly seems that way.