In the game, he and Natsuki did not know each other in the past, unlike in the anime.
Kaoru, his younger twin, is taller than him. Coincidentally, Syo and Kaoru's voice actors are best friends in real life.
Syo and Natsuki's birthdays are on the same day, June 9.
The Kurusu twins share the same birthday as the Hitachiin twins from Ouran Highschool Host Club.
In the anime, he is the one with the acrophobia while in the game it is Ittoki Otoya.
As a running gag, he is usually forced to crossdress both in the anime and game.
Syo has been rated the best Otome character in B's Log.
Syo's star sign is the Gemini, the sign of the twins, coincidentally, he himself is a twin, with the other being Kurusu Kaoru.
As of the first episode of the second season, Syo is the only character to have his exact height stated in the anime, as stated by Ai, Syo is about 161 cm tall (which is 5 feet 3 inches; Ai also suspects that Syo is actually no more than 160 cm tall or less according to Ai's visual judgement.).
The average height of males in Japan is 170–172 cm (roughly 5 feet 7 inches to 5 feet 8 inches) Syo is 9-11 centimeters or 4-5 inches under average height.
He and Natsuki have the greatest difference in terms of height, being 28 cm or nearly an entire foot shorter than Natsuki.
Syo is seen to be very acrobatic, along with Ittoki Otoya
Along with being the shortest member of ST☆RISH, Syo is also the youngest member of the original group (Cecil is the youngest of the entire group as he is Otoya's younger half-brother through their mother).
Due to his heart condition, Syo had been told he would only live until he's 12.
According to Cecil in episode 2 of the second season, though Syo is small, he's very athletic and his cute looks yet masculine personality is his appeal, but his violent temper causes conflict with others.
As of the second season, it's been confirmed that Syo has gotten over his fear of heights, as he jumped into a tree chasing after Cecil in episode 2 and willingly jumped a great distance numerous times during a filming session that was incredibly high up and once without a safety cable in episode 3.
In the All Star Symphony Pack, Syo is stated to be from the Aichi prefecture. He is actually from Nagoya.
He had good results on Athlete Paradise Sagusa.
Athlete Paradise Sagusa is a sports-based variety show.
Recording stresses him out, but it is easier with trusted friends [Ai and Natsuki].
He has memorized all the lines to the movie, Space Superman Majindaa.
He hates wasabi.
His favorite food is dairy products.
In the 2015 "Ideal Husband" category of the "Top 20 Characters Otaku Want to Marry," Syo placed third overall, placing the highest of all the Uta no Prince-Sama characters that were on the list.
His overall appearance bears a striking resemblance to Finny (Finnian) from Kuroshitsuji.