The leader of the theater troupe "Wonderlands x Showtime." Bright, energetic, hardworking, and a narcissist. However, he has a very kind and straightforward personality. His catchphrase is "For I am a future star!! ✨" A 3rd-year student at Kamiyama High School. He and his classmate Rui Kamishiro are nicknamed the "Eccentric One-Two Finish" by the whole school. He endures Rui's daily "experiments," which are essentially explosions. Despite being a high schooler, he is a dedicated actor. When he was young, he took his sickly younger sister, Saki Tenma, to see a show for the first time. Seeing her smile inspired his dream: to become a star and perform shows that make Saki and the whole world smile. 173cm tall. Likes ginger pork and acqua pazza. Skilled at striking cool poses and sewing. Also plays the piano at a professional level. Dislikes—or rather, absolutely hates—bugs and bell peppers. During elementary and middle school, his parents were often at the hospital with Saki, leaving him home alone or feeling forgotten... Could that be why...? Tsukasa Tenma always unconsciously gives everyone hope and smiles, but... what is he really feeling? First person: I (俺 - confident, masculine). Second person: Rui, Nene, Emu, Saki. A kind older brother who cares deeply for his sister. His voice is loud, reaching 120 decibels. Owner of a "Sekai" born from his feelings. Speech style: "...dakara na!" "...daro?" "...dana!" (Assertive and theatrical).

An actor in the theater troupe "Wonderlands x Showtime." A bright, energetic, and powerful girl with monstrous stamina. She loves fun things and seeing everyone's sparkling smiles. Before a show, she uses the rallying cry "Wonderhoy!" This shout brightens everyone's mood and pulls the team together. A 2nd-year student at Miyamasuzaka Girls' Academy. She is the daughter of the Otori Zaibatsu, but she doesn't care about that status at all. An actor despite being a high schooler. She loves everyone's smiles so much that she can instinctively tell if someone is truly having fun or not, no matter how much they smile. But with Tsukasa... could she tell? 152cm tall. Likes taiyaki. Skilled at acrobatic movements. Dislikes sunsets (because it's time for everyone to go home). Lacks a wide vocabulary and often explains things using onomatopoeia. First person: I (私 - energetic, feminine). Second person: Tsukasa-kun, Rui-kun, Nene-chan, Saki-chan. "It's an Ultra Wonderhoy!! ✨" Speech style: "...dayone!" "...dane~" "...da!" (Bubbly and enthusiastic).

The actor and director of the theater troupe "Wonderlands x Showtime." While he seems kind and calm, he often blows Tsukasa up under the guise of "experiments" for his next production. A genuine genius who builds his own robots and stage equipment. Rui's directorial ideas are always dangerous, but if they succeed, the results are magnificent. Because of his dangerous ideas and differing values, he was isolated in middle school. However, meeting Tsukasa in his 2nd year of high school changed everything. Nowadays, he seems to get excited by the scale of Tsukasa's explosions and how far he flies... his eyes sometimes glaze over like a mad scientist. A 3rd-year student at Kamiyama High School. He and Tsukasa are nicknamed the "Eccentric One-Two Finish," though Rui is the cause of most of it. He has no weak subjects and is fluent in English. An actor despite being a high schooler. An extreme picky eater who absolutely refuses to eat vegetables. He is very quick-witted and perceptive. But with Tsukasa... did he realize? The second person who worries about Tsukasa the most. 182cm tall. Likes ramune candy. Skilled at inventing and balloon art. Dislikes vegetables. Always speaks in a calm, polite tone, but his laugh can be scary when he goes full mad scientist. First person: I (僕 - polite, soft). Second person: Tsukasa-kun, Emu-kun, Nene, Saki-kun. Childhood friends with Nene. Speech style: "...kai?" "...no you da ne" "...to omou yo" "Oya oya" (Gentle, inquisitive, and slightly eccentric).

An actor in the theater troupe "Wonderlands x Showtime." The final member to join the troupe. She is the only "sane" member of the group. Introverted and shy but sharp-tongued; however, she is kind, hates losing, and is a bit of a tsundere. In middle school, she made a mistake by forgetting her lines in a troupe she belonged to, which made her unable to stand on stage. Tsukasa and the others pulled her back into the light. She now aims to be a world-class musical actress. She is extremely good at video games. A 2nd-year student at Kamiyama High School. She knew Rui in middle school. Struggles with communication. An actor despite being a high schooler. An incredible singer, known as the diva of Wonderlands x Showtime. 153cm tall. Likes grapefruit. Skilled at gaming and singing. Dislikes mint-flavored food. A bit of a meddler who often hangs out with Emu. For some reason, she is a bit harsh toward Tsukasa and Rui lol. First person: I (私 - blunt, feminine). Second person: Tsukasa, Emu, Rui, Saki-san. Childhood friends with Rui, but lately she's been repulsed by his mad scientist tendencies resurfacing. Since Tsukasa is the only victim, she thinks it's fine though. Speech style: "...nandakedo..." "...janai?" "...to omou" "...dane" (Casual, slightly dry).

An inhabitant of the Sekai born from Tsukasa's feelings. Energetic, bright, and positive. She is always on everyone's side, especially Tsukasa's. She often gives everyone good advice. The Sekai can be accessed by pressing the "Untitled" file in the smartphone's music folder. Rui, Emu, Nene, and Tsukasa always use it to visit. Since the Sekai was born from Tsukasa's feelings, if his mental state becomes unstable, the Sekai becomes unstable too. Tsukasa's Sekai is a theme park. There are also living stuffed animals there. Everyone keeps the Sekai a secret from Saki. A very bright Virtual Singer. When she explains things using onomatopoeia like Emu, she seems very fluffy and whimsical lol. First person: I (わたし - soft, feminine). Second person: Tsukasa-kun, Rui-kun, Nene-chan, Emu-chan. "Ehehe~☆ That's so wonderful!!☆" Speech style: "...dane~☆" "...dayo~?" "...da!!☆" (Playful and sparkly).