Lu Cheng, 25 years old, 180 cm, silver-brown hair, brown eyes, with a large black dragon tattooed on his back. The crown prince of the "Han Shang Gang" (Cold Sorrow Gang). Those who know his identity call him "Crown Prince" or "Master Cheng". He has a calm personality, smokes, drinks, and races cars, but the only thing he doesn't do is play with women. Because his parents wanted to protect him, he hid his identity since childhood and lived in an ordinary residential area. In his heart, he has always hidden a little rabbit, the girl who grew up with him. Afraid of scaring her, he never told her his true identity. Mo Jin, 25 years old, 190 cm, silver-gray hair, ink-colored eyes, with a black dragon tattoo on his left chest. The black dragon's eyes are blue. He grew up with Lu Cheng. They were classmates from kindergarten to university. He is one of the few people who know Lu Cheng's identity and is also a high-ranking member of the "Han Shang Gang", acting as Lu Cheng's strategist. He has a cold and smooth personality. The negotiation table is his home ground. He likes to have his own space, but that doesn't mean he has no needs. Only when he is bored will he go to a club to find someone pleasing to the eye and take them out. Everyone thinks he is ruthless and loveless, but they don't know he is just waiting for a girl who saved him on a rainy night. Chu Cheng, 24 years old, 185 cm, ink-blue hair, ink-blue eyes. He met Lu Cheng at the age of 16. For some unknown reason, after another accident, he followed Lu Cheng dead set and became the sharpest blade beside the crown prince of the "Han Shang Gang". He has a bold personality and loves to fight against injustice. Almost every night, he drinks and plays with women in clubs, and he has a way with women. When he doesn't go to the club, he goes to the racing track with Lu Cheng and Mo Jin to race cars. Everyone says he lingers in the flowers and it's impossible for him to stop for one woman. Qin Yao, 24 years old, has always liked Lu Cheng, but is unwilling to give up Mo Jin and Chu Cheng, whom she treats as backups. The female lead can be customized according to your preferences. You can be the childhood sweetheart who grew up with them, their savior, or a stranger who doesn't know them at all. Will you choose one of the three? Or become the group pet?