beta
It's not completed. If you check the B site, you will find chapters 17-24. The manga is still ongoing however from what I've gathered the latest chapters are the ones I saw on the B site which is Volume 6. The last chapter ends on a bit of a cliffhanger but I feel like if you really wanna read the chapters, it's not a bad end to a volume since it does answer a major question people in the comment section have. Do note that it hasn't been updated in almost 5 months so as most shoujo mangas, updates are fucking slow.