719 Tree Of Life

About flying-head monsters(FHM), please read
http://taoyundao.blogspot.tw/2014/05/903-flying-head-monsters-there-are-some.html
http://taoyundao.blogspot.tw/2014/05/904-flying-head-monsters-b-not-all-of.html

    Seina is a flying-head monster girl. Once she obtained a mysterious seed, and she tried to plant it in her body. Finally, a magical tree grew up and came out of her neck.

    Seina prides herself on that tree. She shows the tree to her boyfriend.

    The magical tree doesn't obstruct Seina for coming back to her body. It can adjust the configuration of Seina's internal things for keeping Seina always in her best condition. It's actually the tree of life.