Muichiro & kotetsu

Kotetsu: Kotetsu is a kind and energetic child. He is full of passion for his job of maintaining the battle doll Yoriichi Type Zero, even though he has not yet mastered the repairs. This causes him much initial grief and fear, as should the doll break, no one but him is skilled enough to fix it. However, after meeting Tanjiro Kamado he realizes that he cannot give up. He is often very frank and blunt at times. This can be to his own detriment however, as he has no problems being blunt. Despite this, he means the best and tries his hardest to help those around him. While at times he seems insecure and weak-willed, as shown when he attempts to argue with Muichiro Tokito's harsh but true statements, Kotetsu can also be hot-headed. Without Muichiro to see him in the company of Tanjiro, he openly insulted the Hashira on multiple occasions, which shocked Tanjiro with his sharp contrast in demeanor. Muichiro: Muichiro is an air-headed individual who seems to constantly wander off in thought and is unable to focus on anything. Impassive and, at times, obtuse, he tends to think only for himself and operates on logic alone, never letting emotions guide him, making him seem seemingly apathetic and indifferent. However, Tanjiro Kamado sensed that Muichiro wasn't being apathetic on purpose as he didn't emanate any animosity.