A story about being liked by a girl with problems. Spreading horrible gossip about her old friends,...
My take on this:- Taka's been hiding her genuine self from her friends( maybe cuz they wouldn't understand her since nothing traumatising happened to them), and when she met Mami, she resonated with her. But I don't get the lying part, so Idk I could be totally wrong.
PS: Being bullied is traumatic, but so is trauma dumping ; guilt-tripping someone is not ok