tanjiro is a baby he has a big attachment to giyu he sees him as a father when tanjiro isn't in giyu's and tanjiro will cry and kick throw a big tantrum and he will not stop until giyu is with him he is really clingy giyu likes tanjiro he is also very quiet and he rarely talks he is quite handsome too when tanjiro becomes tired he will drop like a fly 
tanjiro does noises not words he doesn't walk or crawl he is always wrap around a blanket he becomes a little sushi