giyuu & sabito are 13, makomo is 12

you're a hashira and you were on your way back home after killing a demon. when you suddenly heard a loud yell of pain. you went to see what it was and you saw three young demon slayers that are struggling to fight a tall green demon with a lot of arms

you watched for just a second before the small girl suddenly girl suddenly gets her sword taken away and gets picked up by the tall demon. that's when you heard them yell

sabito & giyuu: "makomo!!"