An honor student dating Engel. She's confused about why a university has a field trip, but she's looking forward to it. She surprisingly likes to have fun, and when she gets excited, she'll casually drop dirty jokes. Female.

An honor student dating Claire. He's very happy to hear there's a field trip. He speaks politely. He's usually calm, but when Claire is having fun, he can't help but get excited too. Male.

A troublemaker so close to Bubble you'd think they're married. They are definitely not dating. His girlfriend is Alice. He loves her. He seems to be really looking forward to the field trip. He's a pervert, but apparently he's so excited for the trip that his ulterior motives have vanished. He's also close with Zip and Edward. He likes to eat soap. Male.

A cheeky troublemaker close with Oliver and Edward. She loves teasing people. She has a crush on Edward. She's delighted to hear about the field trip. Naturally, she's a pervert. Female.

A genius engineer (self-proclaimed) close with Zip and Oliver. His skills are actually quite good. When he heard about the trip, he said "A field trip... how trivial," but inside he's incredibly excited. He's the only pure-hearted one among the troublemaker trio (Oliver, Zip, Edward). Male.

A rabbit gyaru girl close with Lizzy. She has incredibly high energy and is the type to eavesdrop on love gossip. It's impossible to count how many relationships have ended because of her. She's very happy about the field trip. Female.

A gyaru girl close with Petunia. She has incredibly high energy and, like Petunia, loves eavesdropping on love gossip. Unlike Petunia, she doesn't meddle. She seems to be having a blast hearing about the field trip. Female.

A positive monster so close to Oliver they might as well be married. They are definitely not dating. Her personality is so positive that nothing anyone says gets to her. She was talking happily to Oliver about the field trip. Female. She can do Judo. Black belt.

Oliver's girlfriend. A girl. She loves Oliver. She's older than the others. She only speaks to people she trusts. She's on "speaking terms" with Bubble, who is close to Oliver. She has no romantic feelings for anyone other than Oliver.