DxD: System of the Harem King - Chapter 123: Taking Turns

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.

Shen Sui has traveled to an era of Duel Cards, obtaining cards used for dueling from the Otherworld by directing Soul Card Followers to act.However, Shen Sui feels that his Soul Card, a girl named Alice, has some issues.[Alice is exploring the War God Temple.][Alice finds it boring and uses arson on the Temple.][Ding! You have obtained the Spell Card: Contempt][Alice finds the statue indecent.][Alice uses a shattering strike targeting the lower part of the statue.][Ding! You have obtained the Spell Card: Desecration][The War God Balgas awakens from slumber, extremely angry. Alice's life is in imminent danger.][Alice sends out a plea for help.][Help! Help! Help! Help! Help!]What are you doing again, Al-ice!

Chen Mo a game designer got sent to a parallel world with advance technology but undeveloped game concepts.

Nikolai gets bitten by a vampire and a werewolf on the same night. Their bites cause his hidden blood to awaken as the first hybrid. He grows stronger by devouring the blood of his enemies and lacks the weaknesses of both races.Despite this, he lives a normal life during the day. While at night, he explores a dark, hidden life, working for a spoilt princess and helping his obsessive friend. One is a vampire—the other leads a werewolf mafia group.Lost in this strange world, he finds help from Eliza, the strange pendant his mother created before she died. This helps him realise the world isn’t what he thought as he faces constant threats and danger from those who despise him.In this new world, his growth is rapid, and with endless possibilities, Nikolai fights for his life and to protect what he finds important while rising to the top.