As he is never seen in game, it is unknown what he looks like.
Upon listening to Kokona's talk on the rooftop, the player can hear that she is abused by her drunk father. When asking for more information in order to befriend her, Kokona states that he does not abuse her, but cries from his debt problems.
After his wife died, Kokona's father started to drink. He took out loans to pay for Kokona's tuition fees. He borrowed money from very shady people from a company called "Ronshaku Loans", who scammed him through high interest rates and forced him to pay a lot. Kokona tries to help her father get money and out of debt as fast as she can, through compensated dating.
After Musume Ronshaku is released from captivity, he will be no longer in debt. Kokona will be willing to visit Yandere-chan for a favor after this.
Kokona's Father is a caring individual who will go to great lengths to take care of his family. He is mentally weak, as he will cry a lot. After he's freed from debt, he becomes much happier.
- Kokona's father was mentioned in the May 15th, 2015 Build. His personality was fleshed out more in the June 1st, 2016 Build.