Yousei Hime Ren

Gou has woved to find the legendary treasure of Salamander. Searching for it he meets Ren, a fairy, who is looking for the four treasures of Heart. Gous childhood friend Mari is frustrated with Gou running after treasures, but befriends with another fairy Rin. Gou and Rens treasure hunt messes with a secret project led by Maris father. It turns out Salamander isnt what Gou thought it was in the first place...