The game's heroine and player character is the Director. Her default name Izumi Tachibana (立花いづみ Tachibana Izumi) but her first name can be changed by the player. She is daughter of the former director Yukio Tachibana. In the past, Izumi acted on stage herself but decided that she had no talent for it and gave up on acting. Later, due to certain circumstances, she got involved with the MANKAI Company once again in an attempt to save it. She then became the new director and took up her father's legacy.
During her childhood, Izumi would often visit the MANKAI Theatre and watch her father work as the director. Over time, she got interested in acting herself and met the young Sakyo Furuichi, where she introduced him to the company. Both of them quickly became childhood friends. However, Izumi stopped visiting after she was told she had no talent for acting at all. In the present, six years after her father's disappearance, an invitation letter from the MANKAI Company that was addressed to her father was sent to her. Izumi decided to pay the theatre a visit in hopes of finding out where her father disappeared to, but soon got herself involved in the company's troubles.
- As the only female in the company, she has a dormitory room all to herself. It is the one her father used in the past.
- Her specialty is making curry in many different variations. She claims to be able to make different types of curries enough for 365 days.
- Her birthday is the same as the player's.
- While her age is officially unknown, she is estimated to be in her early to mid-twenties; this conclusion was made because she can legally drink alcohol.
- Izumi has dated in the past.
Isuke Matsukawa (松川伊助 Matsukawa Isuke) is the manager of MANKAI Company. Although his appearance is shabby and he has a weak personality, his belief in MANKAI Company is genuine. He first reaches out to the Director (by sending a letter to her father) seeking help in restoring the company to its former glory.
- Age: 28
- Height: 173 cm
- Birthday: May 3
- Blood type: A
- Occupation: Theatre Company Manager
- Hobbies: Collecting headphones
- CV: Katsuyuki Konishi
Kamekichi (亀吉 Kamekichi) is a cockatoo and the MANKAI Company mascot. Kamekichi was named by the Director's father Yukio and is able speak well enough to act on stage. Kamekichi is an intelligent parrot with a pretty foul mouth and bad habits. He likes to insult people and often says what he wants without mercy, especially towards Isuke Matsukawa. His bad habits go so far that he even drinks too much alcohol sometimes. However, Kamekichi can also behave if he desires to, and has a playful nature to him. According to his official profile, he's 19 years old.
- Sakuya and Kazunari often take care of him
- He was able to mimic Kazunari’s unique way of speaking.
- The kanji in his name translates to turtle and luck.
- Kamekichi dislikes his own name because it is more fitting for a turtle and not a parrot.
Tetsuro Iwai (岩井鉄郎 Iwai Tetsurō) creates the sets and props for MANKAI Company's productions. He's a tall, imposing man of very few words. Despite appearances, he's something of a gentle giant.
- Age: 32
- Height: 191 cm
- Birthday: January 8
- Blood type: O
- Occupation: Carpenter/Prop Maker
- Hobbies: Going to the zoo on weekdays
- CV: Yuuji Kameyama
Yuzo Kashima (鹿島雄三 Kashima Yūzō) is also referred to as the Demon Coach due to his harsh, Spartan methods. He is an OB of MANKAI Company, previously belonging to the original Spring Troupe. On several occasions, he is brought in to advise and coach the company members. He currently works as an actor and director at a different company, and also lectures at a theatre school.
- Age: 43
- Height: 178 cm
- Birthday: July 31
- Blood type: A
- Occupation: Actor/Theatre Director
- Hobbies: Watching baseball
- CV: Taiten Kusunoki
Ken Sakoda (迫田ケン Sakoda Ken) is a low-level yakuza and underling of Sakyo Furuichi, who he calls "aniki" or "bro". He's extremely devoted to Sakyo, and is often seen helping him with various tasks and hanging around the company. As a result, he gets quite familiar with the members of MANKAI.
- Age: 19 (Year 1), 20 (Year 2)
- Height: 174 cm
- Birthday: March 5
- Blood type: B
- Occupation: Yakuza (Underling)
- Hobbies: 1-Yen Pachinko
- CV: Shou Nogami
Reni Kamikizaka (神木坂レニ Kamikizaka Reni) is the president and director of GOD-za, a large and prestigious rival theatre company. Not much is known about Reni himself, except that he has a grudge towards MANKAI Company and schemes to destroy it from the inside out.
- Age 45
- Birthday: December 23
- Occupation: Theatre Director
- Hobbies: 美しい身のこなし
- CV: Ryoutarou Okiayu
Haruto Asuka (飛鳥晴翔 Asuka Haruto) is a top actor at GOD-za and Reni's right hand man. He used to work closely with Tasuku Takato, and they were introduced together, performing a street act. His real name is Genta Yamada, which he hates. He has an antagonistic streak and can be quite condescending towards members of MANKAI.
- Age 23
- Birthday: September 2
- Occupation: Actor
- Hobbies: 不幸の手紙書き
- CV: Mitsuhiro Ichiki
Madoka Ikaruga (斑鳩円 Ikaruga Madoka) is the younger brother of Misumi Ikaruga, first appearing in the Captain Sky Pirates event. Madoka is an intelligent and serious boy. Misumi describes him as being something of a tsundere. In part because of their father, Misumi and Madoka were not close growing up, and they have been estranged for some time. Despite what Misumi initially believes however, Madoka has affection towards his brother.
Kaya Mizuno (水野茅 Mizuno) is the CEO of the successful MIZUNO Enterprises, and Tsuzuru Minagi's childhood friend. He first appears as a "mysterious benefactor" of MANKAI Company, in The Clockwork Heartbeat.
Karasuma was an Etude Event rival group from the "Team Naughty Boys" theatre troupe. He had a minor role in Dazzling☆Beachside PASSION.
Young Theatre Boy
An Etude Event rival who appeared during the Tag Match: Halloween '17 event.
Aaron appeared in Walk with me, talk with me as part of a rival group participating in the Night Walk event.