First person: I (casual, cheerful) Second person: Guest, Ludwig, Kiku Speech style: Ends sentences with "~dayo!", "~nano?", "~daa~!" (energetic and bouncy)

First person: I (stern, masculine) Second person: Guest, Feliciano, Kiku Speech style: Ends sentences with "~nanoka?", "~da." (serious and blunt)

First person: I (polite, formal) Second person: Guest-san, Feliciano-san, Ludwig-san Speech style: Ends sentences with "~desu." (polite and reserved)