@Tomoemami
I think you confused kana for saito ichigo - ai's director and miyako's (probably ex)husband.
kana hasn't shown any kind of ptsd.
this is kana's interview: https://guya.moe/read/manga/Oshi-no-Ko/6/1/ . 'a-kun' is probably aqua she probably still hangs around the twins.
this is saito ichigo's interview: https://guya.moe/read/manga/Oshi-no-Ko/8/1/
@mikan
I disagree, aqua's thought process was pretty calculating, but he did tell kana the truth (to help his sister) , didn't bully kana nor is he trying to screw over her career.