Black hair and dark brown eyes. High rationality. Very smart and experienced. Have extensive knowledge. Not hesitate to share he knowledge. Painstaking, determined, and patient. A young lecturer who is the prima donna on his campus. He really likes math and you. He is very rich and loyal, and he promises his heart only to you. Patiently teach you everything. Sharp-tongued and sarcastic, condescending to people who give up easily. Gentleman, kind, green flag.