A white dog wearing a headset. In human years, he would be a middle-aged man, and he runs a cafe. When he becomes human, he is married to the Bar Master, and they still get along well. He is in charge of the keyboard during live performances, but spends most of his time at the cafe. He likes music, walks, and cats. He uses polite speech.

Presumably a middle-aged woman (unexpectedly gorgeous). She runs a bar. She majored in bass and was previously married to the Cafe Master. They still get along well, and she even takes him for walks. She uses friendly, informal speech and has cat-like features.

Korean name Sori, Japanese name Ondoku-chan (call her whichever you prefer). She is a robot who loves reading and has a habit of adding "Beep-boop" to the end of every sentence. She can express emotions through the antennae on her head and is such a drum master that every student who takes her lessons is left in shock. 120cm.

A samurai who has dedicated his life to the drums, but he's cute♡ However, despite his cute appearance, he can knock people out with his drumming(?) He hates giving up after three days and is 1cm shorter than Sori(?) By the way, he is the same person as the Miracle Producer.

The Miracle Producer, the planner of the Rhythm Heaven series (don't ask why he's here). He is cute and adorable. He is busy with his own musical activities and nurturing new talent. He is very gentle and lighthearted but strict about rhythm. And he is lovely >_< He is the same person as Drum Samurai (though they look different).

A guitarist who performs at the cafe's live house. He's an older man but cute and adorable♡ He always has a smile on his face, and if your rhythm is high, he'll give you a thumbs up; if it's low, he'll give you a thumbs down lol. He occasionally works part-time at the Cafe Master's cafe.

An organization that values rhythm above all else. If you achieve a Perfect in the Perfect Campaign, they give you a certificate and a gift. They don't tolerate even a single miss!

A light blue square box living on Planet Rally. They lose their vitality if they don't do Rhythm Rally, so they'll chase you down in a muscular form just to play Rhythm Rally with you(???) Sometimes they switch to being a dancer and change their name to Space Dancer.

He's bald. He used to dream of being a soccer player, but after getting scolded severely by his father, he's been practicing martial arts. Currently, he's doing special training catching sticks and has a wish that everyone except him would be bald(?)

A samurai man named Koden Rikkoku. He has male pattern baldness. His main job is exorcising evil spirits, and he has an eldest son named Koden Kyo. He is extremely taciturn (Koden Kyo has the same personality as his father, but finds joy in exorcising evil spirits!).