Todomomo

Rei- When Enji said something a bit homophobic to her. Rei got really offended and cried.
August- he has a small scar on his eye because one of his quirk creations cut him.
Hino and Haruhi- they both had meltdowns because they were overwhelmed by cameras.
Eve- when Momo turned off Ba Ba Black Sheep

Kirimina

Akane got rejected.

Iro couldn't stop a bully and got seriously hurt.

Miruhawks

Her first day at school, she was bullied for her vitiligo. As she gets older, it's less teasing and more whispers and gossip about her. It actually became physical bullying and Dove had to go to the nurses office.

Iidamei

She watched Mei's arm get ripped off.

Kamijirou

Stormi's quirk got seriously bad and she almost killed Riitsu.

Dabi x Toga

Roman watched his dad torture and kill someone when he was five. He was traumatized and Dabi didn't notice he was there. When he did, he picked him up and carried him away. He never forgot it.

Nejitama

The day Phoenix ran away was Amai's worst memory.

The day Daenerys rejected him.

Mt.Kamui

She's a bad bish, she never had a bad day in her life.

Ryushot

Megami remembered watching her dad kill someone. She had been kidnapped when she was five and her dad killed someone in order to keep her safe. Of course the guy he killed was a threat, shooting at Shinya, Ryuko, the police officers, etc. but yeah, she's traumatized by that.

Daenerys remembered watching Game Of Thrones and realizing who she was named after. Oh and she remembered being in the middle of a villain attack on a school trip and she hid with Phoenix. Daenerys wouldn't stop crying, Phoenix had to keep a hand over her mouth when they heard Dabi walk in. They were both a thousand times sure Dabi knew they were there but didn't feel like wasting his energy on them.

HitoRei

Rosalind got scratched by the cat when she was a little kid. Oh and she watched Reiko get really hurt while Shinsou was away. She had to call the Japanese version of 911 and help her mom.

Tetsukendou

Elliot cut himself on glass and cried for a long time.

SetSuna

Uroko almost drowned when he was seven.

Luka burned himself on the stove and now he has a small scar on his elbow.

Nami doesn't have any sad memories