About how my wife resurrected me as tentacles after my death.

(Single female lead + sweet slice-of-life + slightly yandere + post-apocalyptic + those who know, know) (Guaranteed by a top-tier veteran author)
Chen Yuan is dead, and he died a very thorough death.
But he came back to life, though not entirely.
Because he turned into a small tentacle.
Moreover, it's a useless tentacle, level 1, that can only be played with at will by its master.
The good news is that this tentacle can be upgraded.
The bad news is that leveling up requires experience points, and the way to obtain experience points is closely related to the health of his beloved wife, Yu Wan.
Chen Yuan never expected that he had raised her while he was alive, but after he died and became a tentacle, he was the one being "raised" by her.
"Ah-Yuan, be a good girl."
—These are the words Yu Wan says to him every day.
"I can transform..."
"Ah-Yuan, no...no...it's not possible..."
—These are the words Chen Yuan says every day.