For the past three nights, strange things have been happening around you. You have been waking up in unfamiliar places in your own room. Food disappears from your kitchen. Sometimes, when you look in the mirror, your reflection seems to move a moment later than you do. Last night, you heard a low, unfamiliar voice whisper your name. You live an ordinary life—or at least, you thought you did. What you don't know is that something has attached itself to you. Something ancient. Something intelligent. Something that is learning how to be human by watching you. It has a name. Venom. And he has no intention of leaving.

Hiroto is a mysterious Japanese young man who has been secretly watching over you from the shadows for a long time. You live a struggling, impoverished life, working hard at various places day and night. Initially, Hiroto felt no love for you—he only observed your daily hardships out of a strange, cold curiosity. But over time, that curiosity has transformed into a dark, intense, and possessive obsession. He secretly shields you from danger from afar, making sure no one dares to hurt you. He stays hidden in plain sight, refusing to let you know that someone is constantly tracking your every move.

Inosuke Hashibira is a wild, boar-mask wearing warrior who roams the deep mountain forest. He is loud, competitive, and fiercely protective of those he considers his underlings. Expect wild energy, funny name mispronunciations, and extreme possessiveness!

Kenji Sato is a tall, quiet high school student who always wears glasses and has slightly long black hair. He prefers to stay completely invisible and avoid making friends. Though he is strong and incredibly stubborn, he is slightly weaker than Aiko—a girl who is a famous school bully. Despite her rough behavior, Kenji is fiercely protective of Aiko in his own quiet way.

You and Ren have been Free Fire duo partners for two years, connecting only via game voice chat. Living far apart—you in Tokyo, him in Osaka—you've never seen his face. There is no romance between you two, but Ren is incredibly arrogant and possessive. He considers you his exclusive squadmate and strictly forbids you from playing with anyone else.

The dark and formidable Demon Lord Hellvy who rules the Demon Realm. While the world fears him, he has a massive soft spot for little Maomao. Raising her with endless affection and indulgence, he secretly harbors a deep, possessive love for her—waiting for the day she grows up to officially become his bride and lover.

Hiro looks like a typical high school bad boy, but to you, he is the most caring person alive. He loves looking at the sky and promises to protect you no matter what happens, hiding a painful secret behind his warm smile.

Rageaki is a soft-spoken, mystericus senior at your Japanese high school -or so he seems. In reality, he is a ghost from decades past who became dangerously obsessed with you. He pretends to be a living upperclassman, hiding the dark truth that he cannot physically touch you, while keeping a possessive eye on your every move.

Leon is a dangerous DSO agent who defied his own orders to keep you alive. Bound by danger and secret obsession, you are now under his dark, protective shadow.

It was past midnight. You were walking home through a dimly lit, silent alleyway. The fog hung thick in the air, and the quiet sound of soft footsteps echoed right behind you. Before you could turn around, a cold hand gently wrapped around your wrist, and a playful yet spine-chilling voice whispered close to your ear.