Yui finds a handsome young man sleeping with no heartbeat on a couch. Nobody greets her, however, the door swings open on its own accord. As a result, Yui is sent to a new town and arrives alone at a mansion which will be her new home. The main heroine, Yui Komori, is just a normal teenage girl in high school until her father, a priest, travels overseas for work. In 2018, a new game titled Diabolik Lovers: Chaos Lineage was announced and released in March 2019 on the Nintendo Switch. In 2017 it was announced the first three games would be brought out on PlayStation 4. The games were first brought out on PSP, by the third game they were continued in PS Vita / PS TV format, the first two games were soon also brought out in this format. There are three possible endings for each character based on your choices. Each of these three sections is split into a prologue, ten subsections, and an epilogue. In Diabolik Lovers, every playable character's route is split into three sections: Dark, Maniac and Ecstasy. Players take on the role as Yui Komori ( 小森ユイ, Komori Yui, - default name), who can choose from a variety of male characters as her love interest.

In February 2020, Rejet announced and launched a new project happening within the same universe as Diabolik Lovers, titled Carnelian Blood ( Japanese: カーネリアンブラッド, Hepburn: Kānerian Buraddo) featuring thea 5-man unit called EROSION. Three stage plays also ran in August 2015, August 2016, and January 2018. It has been made into various manga, anime, drama CDs, music CDs and fanbooks. The first series was followed by an original video animation (OVA), which was included in Diabolik Lovers: Dark Fate in February 2015. The franchise has brought forth two 12-episode anime television adaptations by Zexcs, which aired from September to December 2013, and September to December 2015. The seventh game was released in March 2019 playable on Nintendo Switch.

The franchise has released seven games with the first two having been remastered for the PlayStation Vita and released as 'Limited V Editions'.

Its first entry was released in October 2012 for the PlayStation Portable system. Diabolik Lovers ( Japanese: ディアボリックラヴァーズ, Hepburn: Diaborikku Ravāzu) is a Japanese visual novel franchise by Rejet.

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