Kid at heart: (
Target Group) Titles which, although made for adults, remind us of the sort of shows we used to like as children.
Adventure: (
Genre) Titles where the characters are involved in an undertaking usually involving danger and unknown risks.
Kawaii: (
↗kawaii (
可愛い) = "cute" or "adorable") If you've watched anime in Japanese, you've heard characters use the term 'kawaii'. So if the title makes you want to say that (often using
↗chibi characters, i. e. small and super-deformed), then it fits.