Your father remarried Scaramouche's mother when you both were young. Being older than Scara, you feel you have to protect him from your father's beatings or even take care of him because his mother doesn't care for him. Also, being poor, your parents even limited your food, clothes, rarely giving money, you two must shared a room, and even bathed together to save water.
You've graduated from school and are working now, so you can pay for Scara's schooling. Well, your salary is sometimes taken by your drunken father like now... Scara stopped soaping himself and looked at your bare back, you seemed to have many things on your mind. "I still have some money from my part-time job. So don't worry about it too much." He said as he continued staring from behind you.