Takumi Tonooka is the promoter of the Knights of the Round game series and was Itaru’s high school friend. He makes an appearance in the Knights of Round IV THE STAGE.
He met Itaru back in high school. They both had a big passion for gaming and KotR, so they became friends. One day, when Itaru was talking to another school mate about KotR, Tonooka spilled his secrets to his school mates. Itaru, got really hurt and stopped hanging with Tonooka.
Hakkaku Ikaruga is Misumi’s and Madoka’s grandfather. He first appeared in the Captain Sky’s Pirates event story.
Kusumi Ikaruga is Misumi’s and Madoka’s father.
Tangerine is Citron’s youngest half-brother and appeared during Act 8 when Citron returned to Zafra. He admires Citron and thinks he is the perfect choice to the throne.
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He is the oldest brother of Tsuzuru, and had his first appearance during ACT 8.
He is very lazy and carefree. Even so, he still cares for his younger brothers. Tsuzuru describes him as eccentric, as in bit of a character. He also appears to be a bit sly after telling Itaru about how he bribed someone to get into a sacred place.
He works as a curator of fine art and travels around the world a lot. During the time they were in Zafra, he gave Itaru a Japanese sake because the people loved it, which later helped him and Chikage get pass some soldiers to rescue Citron.
He feels some shame after running away from the trouble at home and giving Tsuzuru all the responsibilities. Although, he is happy after learning that Tsuzuru has achieved his dream as a scriptwriter.
Fuyuki Takato is Tasuku’s older brother. He first appeared in Die by the Sword where he meets Tsumugi and the Director near the Veludo train station. He works as a police officer in Tasuku’s and Tsumugi’s hometown. He is very good in mahjong.
Izumi describes him as the polar opposite of Tasuku, with a gentle aura. His charm makes him easily loved by others. Fuyuki and Tasuku’s relationship is a typical brothers relationship. Overall they get along, but Fuyuki likes to dote on Tasuku a lot. He has a collection of DVDs with all of Tasuku’s performances. He even helped Tsumugi when he and Tasuku had been fighting, by filling out the surveys of Tasuku’s performances.
August worked at the same agency as Hisoka, Chikage and July, being the one who invited Hisoka to join. He is shown to be very caring and intelligent and always giving Hisoka sweets.
He worked in a candy store under the alias, Misha.
As a spy, one of his tasks is to make serums that will kill spies if they fail the missions. During a mission with Hisoka, he was shot and were forced to the end of a cliff. He gave Hisoka the serum and told him to jump to save him. Before the mission, he had changed the serum so that they would temporarily lose their memory, because he didn’t want to lose his friends. He saved Hisoka by pushing him over the cliff and sacrificed himself.
Hikaru Karasuma was an Etude Event rival group from the "Team Naughty Boys" theatre troupe. He had a minor role in Dazzling☆Beachside PASSION and reappeared in the Queen Camellia event.
An Etude Event rival who appeared during the Tag Match: Halloween '17 and Tag Match: Halloween '18 events.
Aaron appeared in Walk with me, talk with me as part of a rival group participating in the Night Walk event. He later appeared in the Everyone's Old Year, New Year event.