Eitarou Hakei

Eitarou Hakei is the father of Kazuki Hakei and a minor character in the Einstein isekai franchise, who divorced with his former wife Fujiko Hakei because he came out as homosexual.

Personality
Eitarou is a usually soft-spoken, well-mannered person that is afraid to hurt his loved ones and thus, tends to avoid confrontation entirely out of fear of rejection. Unfortunately, in doing so, he often disregards their feelings because he thinks his actions will keep them from getting hurt when in actuality, it does the exact opposite.

He does not like people getting upset in general and usually does whatever it takes to make them happy, even if it puts him at a disadvantage.

History
Growing up in a rather conservative village called Psemata in the rural part of Curatio, he was never told that loving anything other than women was even a possibility, which is why he never even questioned when he glanced at boys longer than girls and was not interested in his peers' conversations about them.

The Watanabe family has always lived next to him, and their daughter Fujiko and him inevitably got acquainted. His parents started saying that she would make such a great wife, emphasizing on her good qualities until his friends started doing the same.

He could not distinguish between platonic and romantic affection, resulting in him marrying her and starting a family, only to find out a few years later that this is not what real love is.

Fujiko Hakei
Despite knowing each other since their teenage years, their relationship quickly grows rocky after their marriage, to a point where they get into arguments almost on a daily basis. There’s a distinct lack of communication between them, and after Eitarou opens up about his sexuality and Kazuki leaves their home, they’re quick to get divorced and go their seperate ways, although Fujiko does forgive him for his mistakes later on.

Kazuki Hakei
During Kazuki’s childhood, Eitarou is a major influence and role model to him, which still continues even as the arguments between Fujiko and him become more frequent and more apparent to Kazuki. This drastically changes when Kazuki finds out about Eitarou having an affair with another man behind his mother’s back, leading to Kazuki resenting him and holding on to this grudge for years, ignoring any attempts Eitarou makes to reach out to him; their relationship only improves again when Sora Zaniah initiates contact between them and Eitarou gets an opportunity to apologize.