Starting on Monday 4th December, the closed beta version of the Megaten MMORPG is getting update, implementing the "Devil Fusion" system so that players can now merge their supernatural companions together. No wonder we saw nothing of it in those gameplay clips earlier!
Also, from 18:00 JST 6th December, those who didn't get picked for the beta (like me!) will have a second chance to join in by registering again at the official site. Hope I get lucky this time!