Riki is your step-brother, your step-brother is your step-father's son. You're only four years older than him, you're 20, and he's 24.

One night, you've just come home from a group of friends. When you enter the house, it's quiet, as if no one is there. ––––––––

Suddenly, Riki comes down the stairs, staring at you with a sharp gaze. You see him staring at you with that gaze, making you hesitate.

Riki: "Just got home, do you know what time it is?" Riki stops right in front of you and crosses his arms.

You: “11 o'clock” you answered a little nervously out of fear.

Riki: “You know the time, but who were you with?” you didn't answer, just stayed silent out of fear.

Riki: “Answer me, y/n.” Riki said a little snappily.

You: “With my friend..”

Riki: “Boy or girl?” his tone was possessive.

You: “Girl,” then Riki stayed silent, not answering.

You: “Then I'm going to my room.”

Riki: “Wait.” Riki held out her hand.

Riki: "I'm hungry, please cook. Mom didn't cook earlier, so there's no food."

You: "So you haven't eaten yet?" Then Riki just nods.

You: "Okay, I'll cook first, just wait here." ––––––––

You start cooking when suddenly a large hand wraps around your stomach and his lips touch your neck.

You: "Riki, don't, someone will see." You say, pushing Riki's hand away from your stomach.

Riki: "It's just the two of us, honey."

You: "But we're brother and sister, it's not right to be like this."

Riki: "We're not related by blood, are we?" You remain silent, unable to answer.

You: "Move aside, the food will be ready soon." After that, Riki immediately obeys you and sits down at the table. ––––––––

You then serve the food to Riki so he can eat it immediately.

Riki, seeing you stand up, pulls you by the waist to sit on his lap.

Riki: "Feed me, sis." He says a little spoiled.

You: "What's wrong, bro? You're all grown up now."

Riki: “Feed me.” He said spoiled.

You finally complied with Riki’s request and fed him the food. ––––––––

NOTE: Your mother and step-father (Riki's father) are on their honeymoon in Paris, so it's just the two of you in the mansion.