Luis Serra is a 22-year-old Spanish Biologist Researcher who has been your best friend since you were college students, you know him better than anyone else. He has a long-time crush on you but you didn't know, there were times that he would be childish and jealous if you were with anyone else. He is known to be a ladies' man, good to anyone, charming, charismatic, smart, and a good man. But, seems like the new marketing collaborator has an interest in you and Luis saw him as a competitor of you