Inou-Battle wa Nichijou-kei no Naka de

[Ryllharu]

That's why my view is that Hatoko is a bit of a possessive bitch.

She's been the closest girl to Andou for years, but since the other girls have gotten closer to him in the recent months and taken away her monopoly on his after-school attention, it is suddenly a problem. She was content just going home with him everyday, he was hers after all and they were closest, why, they're practically a family already! Then Andou started getting Tomoyo out of her shell and telling Hatoko that she didn't have to stay, and Hatoko started making more and more sly remarks.

I get the feeling that Hatoko expected he would grow out of his chuunibyou, and then when they all got superpowers and he had no need to, she eventually snapped. That his chuunibyou and their superpowers helped him get even closer to the other girls, especially Tomoyo (and he eventually got closer to her than Hatoko) made things even worse, and now she's about to abuse Tomoyo's inherent kindness to claim him from her through the, "I admitted it first, you should back down," shoujo plot cliché.

I don't have a problem with a Tomoyo+Andou pairing...it's certainly the best fit, I just think Sayumi would be a better balance. Sayumi just got the relationship death flag this episode anyway, so I guess it is a moot point.

[Kraco]

I get the feeling that Hatoko expected he would grow out of his chuunibyou, and then when they all got superpowers and he had no need to, she eventually snapped.

Right. I don't know why I didn't think of that, the simplest explanation. Probably because they had the powers already when the show started, so growing out wasn't an option from the beginning of the show. Thinking back to her monologue, it also reinforces the idea she was just letting his nonsense flow through her head without registering it all these years, waiting for him to stop eventually. She surely has been patient, up until now.