"Shinji Ookouchi is a character in the Japanese manga series ""My Wife is Back"". He plays a significant role in the story and his name is mentioned frequently throughout the manga.

Shinji is a middle-aged man with short, dark hair and a mustache. He works as a salesman for a company, where he spends most of his time. He is married to a woman named Yoko, who left him many years ago along with their daughter, Mio. Shinji has never stopped loving Yoko and has been patiently waiting for her to return.

When Yoko suddenly reappears in Shinji's life, he is ecstatic and eager to resume their relationship. However, Yoko has had a difficult life since leaving Shinji and is hesitant to jump back into their old life. Despite this, Shinji remains faithful and devoted to Yoko.

Throughout the manga, Shinji is portrayed as a kind, reliable, and loving person. He is always willing to help those in need and puts his loved ones above everything else. Despite his positive qualities, Shinji can also be naive and easily manipulated by others, especially when it comes to Yoko.

Overall, Shinji is a crucial character in ""My Wife is Back"", as his unwavering love for Yoko drives the story forward and provides the emotional core of the manga."