Anything obscure enough.

nightmare sans. im unironically obsessed with him and his backstory and i have written fanfictions about him. i AM THE ONLY ONE WHO UNDERSTANDS HIM.

mizumafu and mizuki akiyama. the others are posers im literally the biggest fan ever for mizumafu its both me and my gf that are the biggest fans of the ship theyre literally me and her ive bought small mizumafu and mizuki related merch recently i think that adds more to my fan criteria.

Omniscient Reader's Viewpoint/Joongdok/Yoohankim/Yoo Joonghyuk, I am just a possibly autistic little creature whos mind is infested with ORV 24/7 I'd like to think I'm the number one fan thank you very much
And I am the number one and possibly only fan of 404 Shinigami and you cannot tell me otherwise, Grim is so me I miss it I need to continue SinXHolic

fyodor, fyolai. have others too but mainly those two

hopefully one day brock sigh..... i AM fortggreen number one fan eh?

sebastian solace and maybe trud. just maybe

eggs

Emu otori

jard from roblox evade I think im the number 1 fan of him trust me

Murder drones >:3

kado thorne. no contest

octo expansion

rappa. just rappa. if my love for her isnt love at first sight then idk what it is