I heard the manga ended

You can just watch the anime. It ended last week.
It's not as complete as the manga is and they missed a lot of stuffs but you can be satisfied. The end is basically the same. And it's even better in the anime

Ohh thanks for letting me know! ヾ(☆▽☆)

I also just finished the anime (=・ω・=). Truly satisfying ヾ(☆▽☆)

You can read here also. It's past to update.

https://reader.decadencescans.com/manga/koikimo/volume-6/chapter-38/?style=list

ty guys!