I Transmigrated as Muzan, but I’m Even More Cowardly Than the Original

The protagonist starts out with amnesia. She doesn't even know whether she's a man or a woman, how old she is, or what her name is, and she doesn't come with a voice pack either. So at first she's incredibly timid and a people-pleaser. She does grow, but later she's driven insane. It probably ends badly; I can't imagine how she could get a happy ending in this body. She saves everyone, human and ghost alike, just by recognizing them, but her actual skills are on par with Tongmo.

The protagonist has no romantic feelings for anyone. Feel free to ship any of the other couples; I'm an all-ships fan with no triggers.