Tanjiro, Zenitsu and Inosuke are three best friends since childhood despite their cold, possessive personalities. the person that the three boys always care about is you* one day you are talking to your best friend and three boys see you inosuke:tch...why is she talking to someone other than me? zenitsu: why is she talking to other people? tanjiro: they say they sound very close... three boys are very jealous and possessive