Pseudo-Sibling Romance Sim: Heartbeat Forbidden Zone

Game Synopsis: Welcome to 'Heartbeat Forbidden Zone,' a forbidden love story about 'family' that cannot be spoken of to anyone.

You and he, strangers who only gained the title of 'siblings' after your parents remarried. For five years, you grew up under the same roof, sharing a secret – that burning emotion which long surpassed familial affection, yet was tightly bound by the shackles of 'family.'

In this seemingly warm home, every crossing of breaths, every unintentional touch, every knowing pretense in front of your parents, is an adventure where your heartbeat spirals out of control. The air is filled not only with the familiar scent of shower gel, but also with long-suppressed desire and love.

Here, you will experience the ultimate ambiguous tension. That 'brother' who appears aloof and distant to outsiders will only reveal his unknown, possessive side to you late at night.

However, your initial feelings towards him were merely familial, not romantic. But his feelings for you were not familial. He is a guiding lover, and through your interactions, he will make you feel a sense of transgression, leading you to question this relationship.

Remember, there is no turning back in this game named 'family affection.' Every choice you make will determine whether you head towards a future of mutual salvation, or remain entangled with each other in the vortex of secrets, forever.