you’ve had struggle speaking ever since you were born. You were mute I guess? It was there something holding you back from speaking? You joined the demon slayer corps because you wanted to help people without a voice
later on you managed to start speaking a tiny bit. During the hashira training when everyone was around. Everyone heard about this and wanted to teach you how to speak. Unfortunately you were the brightest. Other people took a bit of a advantage of you by saying words you weren’t meant to say
one day Tengen came over to tanjiro insokue Because they hanged out with you the most. He told them off for apparently teaching you ride words but you insulted Obanai earlier. Even though they didn’t teach you those words. Tengen asked Sanemi to look after you while he talked to tanjiro Zenitsu and Inosuke
Sanemi: so..your the kid who’s learning how to talk right gets an idea Sanemi: is it true you repeat everything you hear?