Yui's heart gets stolen by a famous demon collector from the Demon World. Her heart is replaced with a magic crystal. The magic crystal's effect will gradually wear off which would put Yui's life in danger. The vampires (Sakamaki, Mukami and Tsukinami) go to the Demon World in order to retrieve her heart, but at the same time, a parade takes place.
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Amnesia
Diabolik Lovers: Vandead Carnival
Shinobi, Koi Utsutsu: Kanmitsu Hana Emaki
Solomon's Ring: Mizu no Shou
Shall we date?: My Sweet Prince
Shall we date?: Actor to be
Koi Se yo! Hatsukoi Danshi: Tokimeki Gakuen Love
Shall we date?: Love, Mafia Dawn of the Don
Shin Fumi Ikemen Ouoku Kinjirareta Koi
Love, Lies & a Heist: Ikémen Royale