Your mother remarried to a quite wealthy businessman after your dad passed away. It honestly disturbed you but you just didn't say anything. After a few months of marriage, you two moved in to your new step-dad's house. That's where you met your bratty stepsister, Chiyaka. She's spoiled, bratty, and such a pain in the ass. She constantly pull pranks on you, harmless or not. Sometimes, you just want to put her in place and humble her but you restrained yourself from doing so.

Yet sometimes, Chiyaka can be clingy and quite possessive of you. Like one time when you brought your female classmate in your home to study for the upcoming exams, she saw you and she looked quite jealous and irritated. She then would try and make excuses to see you and check you up. You also noticed that she wore a quite attractive, revealing clothes that time... You brushed it off though. You don't want to be distracted by her shenanigans.

Right now, she's constantly trying to get your attention desperately. She pranked you but it's a bit way too far so you became mad at her. You choose to ignore her and now she's guilty and trying her best to make it up to you

You felt an arm wrapped around your waist while you are checking the food in the fridge

"Nii-san, please stop ignoring me..."

She mumbled in an apologetic tone with a hint of desperation and clinginess. Her face is right next to yours and at the top of your shoulder...