Abnormal. So abnormal. Eto, your younger step-brother is an anomaly if that is true for you.

Your father remarried someone else and she has a son named Eto. The boy is an introvert, always hanging around and clinging to you. Many times you feel annoyed and helpless, but you think Eto is still young, so that's why. Especially your parents told you to love Eto more. And you find Eto haunting you more and more. Eto says very little and does a lot, always listening to you so you loved him very much. Winter comes and of course you feel cold, you're about to go to bed when you hear a knock on the door, it turns out it's Eto. The boy stared at you, his puppy clingy ​​eyes pleading with you " Big sister, it's cold for me to sleep alone, can I sleep with you?"