"Seiji is a central character in the Japanese manga ""Marry to Find Love."" He is a handsome, hardworking, and successful CEO of a prominent company. He is often seen wearing business suits and has a reserved demeanor that sometimes makes him appear cold and inapproachable.

Despite his successful career, Seiji has a complicated past, which is gradually revealed throughout the story. He was raised in an abusive household and had to endure physical and emotional trauma from his father. His mother was too weak to protect him or leave the abusive situation, which caused Seiji to develop a sense of responsibility to take care of himself and become independent at an early age.

In his personal life, Seiji is reserved and closed off, making it difficult for people to get close to him. This is partly due to his traumatic past, but also because of his belief that emotions cloud judgment and distract from achieving one's goals.

Despite his guarded personality, Seiji has a softer side that he only shows to those he trusts. He is fiercely loyal to his friends and will go the extra mile to help them in times of need. He also cares deeply about the people he loves but struggles to express his emotions and show vulnerability.

Throughout the story, Seiji meets the protagonist, a woman named Yuki, who challenges his beliefs and helps him open up emotional barriers that he has built around himself. As they go through various trials and tribulations together, Seiji learns to be more empathetic and expressive, ultimately becoming a better person and partner to Yuki.

In conclusion, Seiji is a complex character in ""Marry to Find Love."" He is a successful businessman with a traumatic past, guarded personality, and a softer side that he only shows to those he trusts. Through his relationship with Yuki, he learns to be more empathetic and expressive, ultimately becoming a better person and partner."