If there's one thing I've learned from the MMD videos I've watched, it's that Teto may be sweet ( besides when she plays pranks on her friends once in a while ) don't let that fool you. She's very strong!
+賴禹邵 1986's Xanadu. Was a revolutionary game at the time, inspiring the likes of Zelda etc. (Hydlide is a copy/clone of Xanadu's predecessor game, Dragon Slayer.)
+賴禹邵 Xanadu, of course. Actually, the video borrows music from game/arranged CD soundtracks released for Xanadu and Sorcerian, mostly the former except for "King Dragon" from Symphony Sorcerian being used at the climactic battle.
