Makai Shin Trillion busts some moves, and skulls

In what Jamie Redknapp would, wrongly, describe as literally a video of two halves (its more like 2/3rds bat shit dance video and 1/3 some gameplay), meet Compile Heart's Makai Shin Trillion. The game is set in hell, where its ruler has a trillion hit points - you can see where this is going.

It looks pretty straight forward action RPG with cute characters replete with massive special moves. You character has to bond with the Demon Lords to gain their strength, so that you can take down fatso in the climactic battle.