sakaki sojiro

math teacher & assistant director

I'm an adult, so I can do unfair and underhanded things.
Professor Sakaki is a math teacher with a reputation for being harsh and unforgiving. He usually teaches the higher level classes, but in GH2, he's also in charge of Yuki's homeroom and first year regular math class. As the assistant director of Bell Liberty, he is deeply involved in the main plot of GH2.

♥ read his character route! →

basic information
name 榊宗司朗 (Sakaki Sojiro)
birthplace Tokyo
birthdate & age January 12, 1990 (27 years old)
zodiac Capricorn
blood type A
height 182cm (5ft 11.5in)
personal pronoun 俺 (ore)
stats (scale of 0-5) luck 3 / intelligence 5 / popularity 2 / special ability 4 / physical strength 3 / influence 4
voice actor Okawa Toru (大川透) ~ other roles
fitting in at Bell Liberty
special skill chalk throw
role/affiliation math teacher & assistant director / board of directors
best subject math (teaches ultimate level)
closest friend Sonoda
favorites & other personal info
family father (president of Sakaki Group), mother, older brother
interests making tests where it's hard to score 100 points
favorite food Japanese sake
dislikes complaining despite not putting in any effort

story intro

Sakaki is Yuki's homeroom teacher as well as his math teacher. He has a reputation for being a hardass and harsh with the students. He's grumpy and unapproachable and is exactly like that mean physics teacher (complete with the unexplained lab coat) you had in high school who refused to explain anything twice because 'you should have been paying attention the first time!'

Toward the end of the common route, we find out that Sakaki is more than just a math teacher - he's also the school's assistant director. At Bell Liberty, the assistant director is someone who sides with the board of directors, and if you've played the original game, you know that means Trouble. The board is always trying to rein in the director, pushing corporate interests (profit$$$) over the freedom and development of the students.

Only the board's usually stocked with stuffy old guys from the Suzubishi Group. Professor Sakaki isn't related to the Suzubishi family and doesn't work for the Group, so why has he been chosen to represent the board?

Spoilers, my friend. You'll have to uncover the true plot of the game by playing several character routes, then round out your understanding by playing Sakaki's route once it's available. The main plot of GH2 is excellent, so it's worth it! :3


Professor Sakaki is a harsh, no-nonsense realist who believes that anyone who doesn't work hard doesn't deserve success. He has a reputation among the students for being a slavedriver. He's passionate about teaching, and has rejected the possibility of obtaining a prestigious position in his family's business in order to pursue his teaching career.

In other words, he's a hardass teacher who's 110% serious about his job. But if you manage to get close to him, you'll discover that he's actually a crushed idealist who received a harsh lesson in reality many years ago...


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Sonoda Eiji - stepcousin
Sonoda's parents divorced when he was in middle school, and his mother remarried soon afterward. Sonoda's stepfather is Sakaki's uncle, making the two stepcousins. They get along well despite their age difference, speaking frankly with each other and even completing each other's sentences at times! Sonoda hosts special 'bar nights' for Sakaki at the school cafeteria (paid, of course!) and they chat casually while hanging out.

Kasahara Tomo - coworker & student
Despite Sakaki's official opposition of the director, he is sympathetic to Tomo's issues and privately encourages him to take action. However, he feels that Tomo must make his own decisions and stand up for himself, so he's not willing to bail him out of his situation. Sakaki is also Tomo's math teacher, and Tomo's inattention in class has made him the target of Sakaki's chalk throw more than once... :3

Suzubishi Nao - coworker & friend
Sakaki was sent to Bell Liberty to become director, but was blocked when Kazuki appointed Nao to the position. The two often clashed on educational philosophy, with Sakaki considering Nao too idealistic and Nao finding Sakaki too much of a harsh realist. Despite this, they became close friends, with Nao trusting Sakaki so much that he asked him to watch over Tomo once he came to the school.

Sakaki Yuichiro - older brother
President of Sakaki Pharmaceuticals. He's noted to be significantly older than the professor, which contributed to them never being close, even when they were young. Yuichiro is a short-tempered man who expects his inferiors - even his brother - to bow to his wishes. Naturally, he loses his cool when Professor Sakaki refuses to do his bidding anymore, and tries to stir up trouble...

character data sheet

The following information is a translation of the character data sheet that was provided on the preorder bonus CD. These character sheets are more like lists of random notes than a detailed character profile, so don't expect this to be terribly coherent. :3

Please be aware that these are early development notes and information may differ slightly from the finished game.


strong point: He actually has a lot of faith in the students and is concerned about them, though he won't admit to it.
weak point: Only explains the bare minimum. If you don't understand, he thinks that you didn't put in enough effort.

Basically, he thinks that it would be best if he only taught students who are interested in learning and studying. He's reluctant to teach the normal class, which has a lot of students who are simply in class to fulfill attendance requirements, including the athletes.

special remarks

He's not in the flow of the main character's story, but you can go after him in a side route.

He is a math teacher, but is also the school's assistant director. Because he wields the authority of the board of directors, he has similar authority to the director. He was originally supposed to work for the Sakaki Group, but because of a business partnership and accepting the condition of managing the school, he was allowed to be a teacher.

personal history

This is his third year at BL School (transferred in at age 25). Before that, he was a teacher at a private school owned by the Sakaki Group, where he was famous for his disciplinarian teaching.

additional information (revealed in-game)

Assistant director. He presently wields the authority of the board of directors.

The will of the board is to shut down the school, but because of Professor Sakaki's real feelings, he is not serious about shutting it down. He is just determining whether the school is truly fit to continue or not via the Bell One. Similarly, he's trying to ascertain whether Kasahara is fit to have the position of director. If Kasahara is having a hard time having been made to be the director then he should quit, but if he voluntarily starts growing some determination, then he intends to support him. He mobilizes Sonoda to stir things up in the school, but he is not considering helping Sonoda achieve his goal, because it's a problem Sonoda has to solve himself.

Sakaki himself, because he was dispatched by his parents' company, the Sakaki Group, is executing the instructions from the Group concerning shutting down the school. But he's just stubbornly persisting in putting forth a public face of fulfilling his duty - as long as it appears to the Sakaki Group that he's fulfilling his duty, then it's fine. Despite any doubts he may personally have about the way BL School is, he doesn't think it needs to be shut down.

additional information (not revealed in-game)

When he was a student, his grades were almost always perfect (100 points). His fundamental ability to comprehend is high. That, coupled with the fact that he's proficient at deciding what is relevant or not in a piece of information, meant he could learn very efficiently. He's not really a genius, but he has no difficulty in making the effort to study.

A supporter of fiercely competitive entrance exams. He thinks high school students are too immature to judge what is or is not necessary. Because of that, he thinks it's good for them to study and work hard now, to increase their options for the future. Or rather, for students who don't have some special talent, that's the only thing they can do for their future.

He likes to make tests where it's hard to get 100 points by mixing in questions that trip up high ranking students.