The Ezomichi-chan in Hikari’s head tells him to stop feeling guilty about being happy, and he decides to take her advice and agrees to tutor Iroha in math. Being one-on-one with her is a bit much, however, as the vibes quickly turn from studious to romantic…until Hikari’s mom and brother are caught very blatantly snooping.
Up until this point it’s been pretty smooth sailing for Hikari. He’s gained a girlfriend, another friend who happens to be a girl, and his worst enemy seems to be himself and his own lack of self-esteem. He’s just waiting for something to come along and take all this stuff he thinks he doesn’t “deserve” to have.
The universe obliges: Takanashi Mitsuya lures him out after school with a fake love letter (one Hikari knew would be a trap), and tells him to surrender Iroha so he can date her, or else. Takanashi is bigger, stronger, more handsome, more popular, and more blonde than Hikari, who has no clear answer ready for why Iroha is with him.
After getting punched, Hikari feigns a cold to go home early, but ends up in the same playground as a little girl who turns out to be Takanashi’s little sister Anzu. When Hikari brings up the possibility of his only recourse against Takanashi would be spreading false rumors online, Takanashi decides to use that, ordering Anzu to scream as a policeman cycles past, then claiming Hikari tried to take her home with him.
Takanashi snaps pics of the incident and posts them on the chalkboard at school, and within a day everyone has been convinced that Hikari is a creepy lolicon and shuns him even more than they used to. Itou knows the rumors aren’t true, as does Iroha, but Hikari doesn’t want them to get too close to him lest it make life difficult for them (Ishino, however, believes the rumors and expresses her disappointment).
As perfectly as Takanashi’s plan to toss Hikari’s already shaky rep in the dumpster, the reason he did it in the first place—to steal Iroha—ends in abject failure, when Iroha won’t even let him talk to her. Hikari is enough for her, and she’ll certainly take a kind boy like him over someone who spreads such harmful rumors for his own gain. Takanashi is flabbergasted, but perhaps it’s a teachable moment for him.
Meanwhile, Hikari’s brother Kaoru turns out to be very good friends with Anzu, who learns that Kaoru’s brother was wrongly accused of being a lolicon. Hikari’s mother (who is always a hoot in her loving yet frank disposition) can’t help but go with what makes sense, and Hikari can’t really argue with her; he’s never gotten along with people in general; for a misunderstanding like this to spiral out of control was always a distinct possibility.
Still, Hikari is lonely enough to still reach out to Iroha over the phone, surprising her. Unfortunately, it’s to tell her she should stop wasting her time with someone like him. She ain’t hearing it, and won’t listen to another word of his self-loathing nonsense.
She says what he couldn’t say to Takanashi: why she’s with him. He’s a nice person who cares about his friends and awkward yet loving. There’s no one she’d rather be with, so he can dispense with further attempts to convince her to leave him.
Iroha is on fire this week, between shutting Takanashi the fuck down with immediate effect, and making it clear to Hikari that she’s going to go out with the person she wants, and that’s him, damnit! If he likes her like she likes him, she’ll let her be by his side, in good times and bad.
The next day, Iroha is the one who encounters Anzu, and helps her up after she trips racing to her brother’s school. Takanashi tries to start up another talk with Iroha, but Anzu insists he hear her out: Kaoru’s brother is in trouble because he told her to scream when the policeman was nearby.
Hopefully Takanashi’s love for his sister and realization that he was a gargantuan ass will spur him into correcting his mistakes, setting the record straight about Hikari at school, and accepting defeat.