I'm pretty sure they've established Mimi as essentially a zombie, that's how she can always get put back together again. I wouldn't make any bets on someone who's already dead having all that happy of an ending lol. Bittersweet at most.
So we all know that something absolutely heart breaking is coming up soon, right? The precious cinnamon rolls are too happy, and joy can't survive long in this manga.
Isn't their love almost more beautiful because we know it might be fleeting? Almost like picking flowers with the knowledge that they will soon wither...
They're just so cute together, I hope this manga will announce an anime soon. Normally, manga series with 1 chapter/month, 30-40 pages long per chapter, will have an anime adaptation around chapter 40. Hopefully this manga will be the same.