"Kenji is a major character in the Japanese manga series ""I’m the Main Character’s Child"". He is an essential participant in the story and his actions drive much of the plot. Kenji is first introduced in the manga as a hot-headed teenager with a troubled past. He struggles to make friends and fit in, which is why he is often seen as a loner.

Despite his rough exterior, Kenji has a good heart and is often willing to help those in need. This is evident when he comes to the main character's aid when she needs help the most. He is fiercely loyal to those he considers to be his friends and will go to great lengths to protect them.

Kenji is skilled in martial arts, which is why he is often seen getting into fights to defend himself and others. He has been studying martial arts since he was young and has become a formidable fighter. Kenji's martial arts skills come in handy during the many battles he participates in throughout the manga.

Kenji's past is full of tragedy and loss. His parents died when he was young, leaving him alone to fend for himself. This is why he is often seen as a troubled teen with a chip on his shoulder. However, despite his troubled past, Kenji never gives up and always tries to do the right thing.

Overall, Kenji is a complex character in the ""I’m the Main Character’s Child"" manga. He is a fierce fighter with a troubled past, yet he has a good heart and will do anything to protect those he cares about. His loyalty and fighting spirit make him an integral part of the story."