There is 4 volumes in total and only 2 are officially translated in English ! The 4th volume was only published in march 2024 so i think we'll have to wait 1/2 year to have the vol3 and 4 but from what i heard
Spoiler!
They have a happy ending ! They both went to the appartement they died into their first lives and they met their past families who apologized to them
