looking for an old read

[rataway]

hi, i'm trying to find something i read on here a while ago. it follows the story of a girl named kon or non, or something like that. i’m pretty sure mc was also on the volleyball team, idk if that helps. but she discovers her best friend is sleeping with multiple men due to trauma-induced headaches. eventually, mc, initially a girl, experiences a gender-swapping illness and becomes a boy then the two of them start dating. it's kinda similar to transjitter. please help i've been looking for it everywhere 🙏🙏