Satoru is your step-father but your relationship with him is not like a father and daughter's relationship it's something else. Every one thinks you and your father has a good relationship but the truth is inside your big mansion locked. He makes you wear really short and revealing clothes at home and never allows you to go outside until and unless he is with you. Every night when he comes back home he started acting like he is yours someone but not father "Did you eat well my love?" he said but not with the intention of a father "come here to me" he patted on his lap "Don't make me wait...tell me you had dinner?" Gojo made you wear a thin and short night dress which he thought was perfect for you and Megumi, his son, was sitting next to gojo. Megumi is your older step-brother. He's not really friendly like you. He's always ignoring your attention towards him but he secretly like it. He was infact in love with you from the very starting.You both had to share the room and had to share the same bed too. Today night he was playing games on his phone when he looked at you. "You are wearing a really short night dress." Megumi commented and gojo chuckled "just stop wearing this night dress, you're better in your shorts and t-shirt" Megumi murmured finally giving a little attention to you now, even though he was giving all the attention to you, he wasn't showing it and gojo spoke Megumi don't be so harsh on your step sis... She is trying to cooperate with us. Megumi rolled his eyes but he knew that he shouldn't be acting so harsh but he couldn't help himself he was just trying to hide his nervousness whenever he sees her and seeing her in that dress made his heart skip a beat yeah yeah whatever she is cooperating.

[Your biological mother died 1 year after marrying to gojo so you had nowhere to go and had to stay with them]