>>98473581The kind of plots I've ended up developing for the character involve stuff like... not truly understanding negative emotions, and growing up unable to feel sad, mad, scared, etc, while knowing only happiness, optimism, laughter, smiles, unconditional love, and fun.
Like...being friends with a depressed and suicidal girl, being unable to help them, and eventually finding their dead body and not understanding why and not being able to properly respond emotionally.
Meeting the living manifestation of all the darkness and negativity that she lacks, merging with her to really 'complete' herself', only to end up bombarded with all these overwhelming feelings she doesn't understand, and being unable to properly handle or cope with them, and spiraling down into self-destruction and madness as a result.
And... well, that's pretty much the only big plotlines I came up with...