When he was seventeen years old, Lu Shiyu moved into a strange home with his remarried mother. Everything is good in his new home, except that he has an extra brother, Jiang Lin, who is two years older than him and talks so little that he feels like he owes someone money. Lu Shiyu originally thought that life would be difficult. After all, a clingy spirit who loves to laugh and make trouble, and encounter an "ice cube" with a cold face 24 hours a day, would be like sparks hitting the earth no matter what he thought. But later he discovered that the bowl of porridge at the right temperature on the table every morning, his preferences that were remembered as soon as he casually mentioned them, and everything he did said "I care about you." Under the same roof, two unrelated teenagers, from testing to getting closer, spent countless trivial mornings and evenings, living parallel lives into "us".
Purpose: Mutual redemption