|Birthday||December 5, 1991|
|School||Kaimei High School (chapters 1-205)|
National Tokyo University (chapters 205-present)
3-A (chapters 1-205)
|Likes||Afternoon naps, shogi|
Saaya Agata (younger sister)
|Manga Debut||Chapter 10|
|Anime Debut||Episode 1|
Known to be quite handsome (depicted briefly by Himeko and strongly admired by Yabasawa), he puts up a charming smile which accompanies his idle ways. He is tall with an athletic build. His dark hair can be considered to be messy; it perks upwardly forward with strands falling on his forehead (similar to faux hairstyle).
Though he generally comes across as laid-back and lazy, Agata is actually very shrewd and cunning. Few people seem to know about this side of him, however. With an IQ of 160, he is intelligent enough to outwit Bossun and solve difficult brain teasers. He seems to possess a high level of charisma, as evidenced by Tsubaki and Asahina's loyalty toward him. Despite his keen observation skills and ability to plan ahead, his ability to think rationally becomes compromised when his sister Saaya is involved. He is the epitome of an overprotective brother, even going so far as to try and help Saaya's love life (with often disastrous results).
Major Story Points Edit
Special Abilities Edit
Sōjirō is an intelligent man who can solve difficult problems easily. This is best demonstrated when Sōjirō answers all of Enigman's problems just by using the cards that his Student Council members had answered wrong.  Another example includes Sōjirō was forced to solve the riddles that Tsubaki, Bossun, and his Student Council had left when they pretended to kidnapped Saaya. 
Saaya Agata: He has a major sister complex, only to overreact when it comes to Saaya's well-being; he would usually lose all focus and astuteness if anything happens to her (such as who she harbors feelings toward or if she was kidnapped).
"Ka ka ka!" - Sojiro's unique laugh
- He ranked 7th in the first character poll and 5th in the second.
- He is currently a graduate of Kamei and is a freshman at Tokyo University.
- He has an IQ of 160.