[Blood Blockade Battlefront + Blood Lad] Diary of a Strange Creature Idol

His craving for blood robbed Zero Kiryu of his reason. Just as he was about to commit an irreparable mistake, a strange cloud of smoke burst into the air.

Zero Kiryu and his childhood friend Yuki Cross arrived in a wondrous city: Hellsalem's Lot, the demon city connecting the otherworld to the real world.

The Gem Yellow Diamond, and... that terrifying demon, a man calling himself Tsugikuni Michikatsu.

Yellow Diamond spread his arms and grinned brightly. "Sorry! I summoned you here because I messed up!"

??? You don't look sorry at all, hey!

To survive in the wondrous city of Hellsalem's Lot, Zero is forced to join an idol group with them, under Tsugikuni Michikatsu's threats and Yellow Diamond's tempting offers.

Zero: ??? Hey! Something is definitely wrong here!

Yuki (holding a cheering stick): ...This is pretty great, Zero. I'll help you become the greatest idol!

Zero: I don't want to!!

Michikatsu: Hah. You're weak, always hiding where the sun can't reach. Can someone like you really become a star on stage?

Zero: ... (That's too much! Who says I can't? Of course I can!)

As for the reason...

Michikatsu: I have a genius younger brother. Every day I spent with him was like eating lemons.

Yellow Diamond: I have two younger brothers. We're a loving family, but they always keep their feelings hidden.

Zero: My younger brother, he...

Yuki: Nothing wrong with that!

The story has three protagonists.

CP: Zero x Yellow Diamond. For Michikatsu's pairing, look for the hints yourself.

Theme: The idol-life diary of three nonhuman beings