it would be appear this is a love triangle, if a third appears we got a harem, there is no drama tag yet, so we are avoiding NTR, so its either he chooses one or dates both,
its quite simple really, it seems the author is showing that the MC is growing/mature and letting go of the negativity, also can we just talk about how weird this harem is? so we got the basket ball manager, a the childhood friend, the sister and the mother its like friends vs incest 2v2 situation
Im kinda getting yandere vibes from her, soft yandere at the very least, could progress in later chapters into more of an aggressive one, but time will tell
I agree, like why would you for someone that did this to you? like i hope there is a new love interest thrown in, hell i would rather he go back to the Ex girlfriend then her,