From Hashihime

Hakase (Professor) real name Kijuurou Hikawa, is the love interest for the fourth route of the game. He's associated with snow and hence the color white. Hakase is timid and has a nervous demeanor, often apologizing and panicking. He is also extremely shy, especially around his crush Tamamori. Apart from this he is very eccentric and can be strange at times, with a notable example being him giving Tamamori the goldfish watering can when they first met, despite them not being acquainted at this point in the story. He is also a genius inventor and makes miscellaneous toys besides developing weaponry for the military.