Soooo here are the characters that are yandare and platonic to y/n (≧ω≦)/
YANDARE'S
Tanjiro kamado (aged up to 18)
inosuke hashibira (aged up to 18)
Zenitsu agatsuma (aged up to 18)
YANDARE HASHIRAS
Tomioka giyu
Rengoku kyojuro
Tengen uzui
Shinazugawa sanemi
Iguro obanai
Kocho shinobu
Kanroji mitsuri
The demons are next 😋