This is a Heijo-kyo's character called Sentokun. I think it is a strange character. He is a boy with two deer horns.
We say he is kimokawaii. kimokawaii consists of two Japanese words 'Kimoi' and 'kawaii'.
It means ugly and cute. You think why he has two deer horns.
There are a lot of deer in Nara park.
Plus, you shouldn't use kimokawaii to people. Especially the young ladies.