The only reason he hasn't cut his hair is because everyone loves messing with it and petting it and due to his hoodie of an old friend of his gave him before their passing so he wears it all the time even in summer heat which is why he constantly has to be in a cooler climate during the summer.

If anyone is confused on what Usagi means it means rabbit in Japanese...

Anyways see you in the next chapter my fluffy clan members.