I'm Sorry

I'm Sorry is one of the fifteen possible fourth episodes in the visual novel and one of four episodes to follow Relationships Revealed, the other three being Waiting in Vain, No More Hesitation and Kotonoha Broken. In this episode, Makoto stays devoted to Sekai to the point of ignoring Kotonoha completely during the school festival.

Plot
Makoto and Sekai have just finished having sex with numerous condom wrappers, tissues and other items to indicate they've had sex an incredible number of times. They talk about recent events and how they had to tell Kotonoha about them because Makoto's in love with Sekai.

At school, the festival has started and the trio have finished building the break room. They then bully Kotonoha before asking her to prove that she's going out with Makoto. Kotonoha then meets Makoto and asks him to come with her. Makoto's about to say no but she then says that if he's busy, he can come later. Makoto then tells her that he's going to see the festival with Sekai. Kotonoha then begs for him to come and that she'll be waiting no matter what. She then bumps into Taisuke while carrying some chairs and he helps her carry them. Taisuke asks Kotonoha to see the festival but is declined. At class 3, many people are absent and Nanami also ditches them to go out with her boyfriend. Setsuna then tells Sekai and Makoto to go take a break and then discreetly mentions to Sekai that they can take their time.

Makoto and Sekai go back to the class and Sekai stays to help while Makoto goes out. He witnesses Kotonoha being bullied by Otome and her friends and realizes it's his fault. He appears, to everyone's surprise, and states he's come to see Kotonoha, before apologizing to her and then leaving, effectively dumping her. The girls who were bullying Kotonoha back off and Otome, despite bullying Kotonoha on a regular basis, encourages her to cheer up and leaves. Kotonoha is frozen from what happened at the reception desk when Taisuke runs into her. Kotonoha starts crying with Taisuke there to presumably comfort her.