The story starts with a deep kiss with a demon-woman, which awakened his SSS-level skill. What's going on here? Scheming loli, cool genius, innocent schoolgirl, and seductive demon as girlfriends... Faced with wave after wave of bad omens and misfortune, Lin Que feels like he's under a lot of pressure, when all he wants to do is to quietly farm monsters and level up until he's the strongest! (Source: Kuaikan, translated)

"Awaken from the killing and become the strongest demon king!" In order to survive, young Fang Cheng was forced to sign a contract with a Slayer Demon. For each demon he hunts down, he can unlock a new ability. Facing this dark age of demonic invasion, Fang Cheng vows to fight back and become the strongest! (Source. Tencent, translated)

"If I thrust a knife through your heart, will you feel my pain?" Part of Locked Room anthology