Sakamoto

The protagonist of this work. He generally uses "boku" as his first-person pronoun, but sometimes uses "watashi" or "watakushi." His first name is unknown, as it is often obscured, hidden, or drowned out by noise (according to Kuronuma, it's a banned word). He is from the private Innocence Academy.

A handsome boy with glasses and a neat side-part hairstyle. Every move he makes is cool and stylish, embodying the perfect elite high school student. He excels in both academics and sports. He possesses a wide range of skills, from the sophisticated, like sewing and writing in cursive, to the extraordinary, such as writing on the blackboard by seeing through students facing him, and drawing pictures that reveal different images when viewed upside down.

These unique and diverse abilities are released as Sakamoto's "secret techniques," captivating those around him and even helping people with their problems.

He loves animals and often visits a treehouse after school to check on the birds or refers to a dog that appears on the school grounds as a "guest." He scores 100 on every test, and his knowledge of sexual education is exceptionally extensive, earning him a score of 120 on the health test (with a comment noting that "his knowledge of sex surpasses that of a typical teenager").

He dreams of working at NASA in the future, holding a grand dream on a cosmic scale. In the final episode, he decides to leave school to pursue his dream, having been invited by a space development organization. For once, Sakamoto's cool poker face breaks as he departs from Gakubun High School, moved by the tearful cheers of his classmates who are sad to see him go.