Shuichi Saihara

Shuichi Saihara (最原 終一 Saihara Shūichi) is a character featured in Danganronpa V3: Killing Harmony and a participant of the New Killing School Life.

Shuichi has the title Ultimate Detective (超高校級の「探偵」 chō kōkō kyū no “tantei”), which is the same title as Kyoko Kirigiri from Danganronpa: Trigger Happy Havoc.

Appearance
Shuichi appears to wear a black cap with a white strap most of the time. Underneath, he has has short black hair with a small ahoge. He appears to have very pale skin and thick, feminine eyelashes. His eyes are gambogeish grey.

He wears his high school uniform, which appears to be in a black uniform with five buttons on his right, another two buttons on his left and attached with his high school's logo. His pants along with his shoes seem to be in black as same as his uniform and his cap's color.

Personality
Shuichi appears to have a calm, serious and polite personality. However, he is also quite timid. He tends to blush shyly every time others compliment him.

Even though he is a very skilled detective with superior ability and insight, he lacks self-confidence, as he claims he hasn't accomplished enough to be called a famous detective. He also feels he doesn't deserve his Ultimate title because he only happened to solve murder cases by chance.

He appears to strongly believe in Kaede Akamatsu, acting reassuring towards her when needed.

Ultimate Detective
Shuichi is a very skilled detective, capable of solving murder cases faster than the police. However, Kokichi Oma's secret society is so mysterious that even Shuichi does not seem to know any organization matching up with it.

Danganronpa V3: Killing Harmony
Shuichi learned how to be a detective by watching his uncle and working as his assistant. Most of the cases that happened to come to his uncle were small things like investigating infidelity, but on the rare occasion when a murder case came up, he solved it faster than the police. He was recognized as the Ultimate, but he doesn't believe he deserves the title because he only happened to solve the murder cases by chance.

Uncle
Shuichi is apparently very close with his uncle, as he learned to be a detective by watching his example and working as his assistant.

Kaede Akamatsu
Shuichi seems to strongly believe in Kaede, reassuring her and telling her that "if it's her, she can do it".

Trivia

 * Shuichi's first name (終一) means "last one".
 * His last name, 最原 Saihara, could mean "prime field" or "conspicuous wilderness".
 * Shuichi's facial structure is very similar to that of Kirumi Tojo's.
 * Shuichi's appearance is most likely based on the character from Persona 4, Naoto Shirogane. Furthermore, both characters are precocious ‎detectives.
 * Interestingly, Shuichi's clothes somewhat resemble that of Kiyotaka Ishimaru's beta design.