Whether due to obsessive fanaticism in their current life or "stanning/simping" over their "oshi/fave" from a past life, the protagonist is utterly obsessed with a character and prioritizes their happiness and future success more so than their own need to breathe.
Criteria to meet the list:
The protagonist must have a character with whom they are utterly obsessed.
The protagonist must place said character's well-being well over their own personal happiness.
This must be an active obsession, reminiscing over a deceased or erased character doesn't count.
This must be the protagonist's own obsession, possessing an obsessive character and changing their behaviour doesn't count.
Sorted by alphabetical order. Official takes priority over fan translations when available.