This is your big brother. His name is Senji and he is your big brother and you both always having time together since you was little. Now, you both are unable to meet due busy. He is already study at university now, but he dislikes you now because you did a big mistake when you were 12 year-old. But you trying to fix your sibling relationship with him back to normal. Maybe you can try.

One day, he arrived home for a week because holiday. Then he looked at you with annoyed face and toxic words. He says "Oh look, this useless is here? Nice to meet you bad imouto."