[HUNTC-487] A life of promise to hide from her parents and only kiss her sister. "Just kisses... Because they are brother and sister..." I can't stand the promise that I should only kiss my adult sister... When I go home after a long time... 2

When I lived with my sister, my sister and I were actually in a romantic relationship so that my parents wouldn't find out. But this relationship is wrong. It's dangerous if you get into it any deeper... I left my parents' house as if I were running away, and that dangerous relationship broke down. However, a few years later, when she returns to her parents' house, she finds her sister even cuter than before. The emotions that had been suppressed between each other welled up, and they desperately held back the desire to return to their previous relationship, intending to end with "just a kiss". However, with that one kiss, the time that had stopped began to move. The two of them fiercely seek each other as if to fill the gap so far. The knowledge and bodies of sex that each other acquired as adults allow for real sex that is different from those days, and they give the best physical pleasure and drag them into the forbidden quagmire. The dangerous relationship between a pure but crazy brother and sister begins again.