Su Momo tried to take her life several times after Lang Xingchen death. Meanwhile, Lang Xingchen who was about to reincarnate saw this scene and made a decision. Lang Xingchen is willing to sacrifice her reincarnation just to protect her lover by erasing Momo's memories. Unfortunately (?), Su Momo still fell in love with Lang Xingchen who became a spirit.

After Lang Xingchen spirit disappeared, Su Momo later diacovers that the lover of Lang Xingchen was actually her. She decided to remain single.

One day, Su Momo is watching the Moon until the Moon became bloody red. She knows that the world will end, but she's still quite happy (I think).

Then, she suddenly woke up and saw Lang Xingchen beside her. The world restarted from the time before Lang Xingchen died. She prevented it, and they lived happily ever after. It's a bittersweet ending because this time, Su Momo is the only one who remembers. (The author said that Mu Rong, a character from the other novel, sacrificed her body because an evil character will take advantage of the bloody moon. Then, the world restarted.)

One small complaint would be for what I’ll call the true ending. The moon turns red before purple slime engulfs the world, leaving everything to be reset up to the point right before Lang Xingchen’s death as we are informed by Sang Yu this was the result of Mu Rong’s sacrifice. Without the context of My Death God’s Roommate, this feels a bit sudden and out of nowhere, no build up or nothing which I find slight issue with. Another complaint I have, this one more subjective, would be the fact Su Momo is the only one with memory of what happened after Lang Xingchen’s death in the previous timeline. I personally just find it unsatisfying to make it so that it seemed the story I had been following had never occurred really.