Well I don't know about underrated because he hasn't written much but after
Tsuritama they need to give
Oono Toshiya more scripts.
I also love when
Fuyumi Ono's works get adapted. Twelve Kingdoms is my favorite but both Ghost Hunt and Shiki were very solid works.
I also wish
Yoshitoshi ABe would do a new work.
But basically I just think the anime industry needs to expand a bit. When you get the same writers to keep writing stuff than there is a lack of different voices and everything starts sounding the same. It gets boring after awhile.
Oh and
Guilty Crown...dropped that one by episode 5 and I think I stuck around too long
