Younger Brother
Little Brother
There is someone with a bow and a stick, wearing horns, going down a slide. What type of person do you imagine? I'd say someone who's an immature boy. That would be your younger brother.
だい, で, てい
おとうと
None
Your younger brother loves playing dress up so much that he's now started dyeing (だい) his hair all kinds of colors. Imagine the bright red, blue, green and purple dye in his hair.