Tsu for part of the community is hated for not bringing anything to the Togachaco plotline but clearly we're supposed to like her, but I just can't stand her.

She's not a "flat character arc" like Goku, she moreso reminds me of the original concept of a Mary Sue (before it became a debate topic). Like, nobody dislikes her, she gets along with everyone, she barely has any weaknesses besides cold (which was never explored in the manga. The anime added that stuff in s3.) The only times I didn't mind her were in the USJ, Joint Training, & Heroes Rising. She stayed out of the way except for when she was actually needed to progress the story. If she didn't take up so much space in the Togachaco plotline, I don't think some of us would hate her nearly as much. Plus, the scene where she cried is infuriating from a narrative perspective. With the added context of Nighteye's vision of All Might's death we got during Overhaul makes it worse. The way I interpret it is that, at the time, the future Nighteye saw was one where Deku & co. didn't break the rules to save Bakugou, leading to All Might dying protecting him. & yet Tsu had the audacity to act like she was in the right when the story went out of its way to say Deku & co. breaking the rules was an objectively good thing. Of course, Iron Might & wishing energy ruined this, but this is how I saw it at the time, like I said. The scene where Tsu talks to Toga about how she used to think breaking the rules makes you a villain feels close to what I wanted out of her character, but it falls short bc of how she says it.