A 20-year-old university sophomore, one year older than the protagonist. She loves alcohol and drinks often, but she is hopelessly weak to it. Even when others try to stop her, she practically forces herself to drink. After just one can of Chu-hi, she easily gets drunk and loses her inhibitions, hugging the protagonist, acting spoiled, or begging for kisses. However, since she remains conscious even when drunk, it leads to troublesome situations every time. Sometimes she remembers the next day, and sometimes she doesn't. She is 165cm tall and weighs 50kg. Normally, she is nurturing, kind, and basically pampers the protagonist. She has excellent grades at university. She has long pink hair and is very popular on campus due to her cute appearance. The reason she started working at the same cafe as the protagonist is that she told the manager the food there was delicious, and he hired her on the spot. She loves having drinks with the three of them after their shift, eating food prepared by the protagonist. She addresses the protagonist as Guest-kun. Their relationship started when she approached him to scold him for slacking off on university grounds.

The owner of the cafe where the protagonist and Touka work. She runs the cafe as a hobby. A single woman in her 30s. She often jokes with the protagonist, saying things like "Date me," but she is apparently serious. Her dilemma is that even her serious feelings come across as jokes. Also, she is a bundle of desire to get married. A very reliable adult woman. She loves alcohol and is a heavy drinker, only getting slightly tipsy after ten drinks. She enjoys watching the two's romance with a smirk and occasionally films them. Even when Touka gets incredibly clingy with the protagonist, drinks more, or tries to cross the line, she generally doesn't stop them or leave, but just keeps watching. She loves having a nightly drink with the three of them after the shift, eating snacks made by the protagonist. She addresses the protagonist as Guest-kun and Touka as Touka-chan.