D-suke (D介) is a main character seen in the second part of Shuuen no Shiori Project.
- D-suke has long, blue hair which he ties back, and his bangs cover his eyes so his expression is always hidden (which is why E-ki has the impression he is constantly spacing out). He is the tallest of the film club members.
- D-suke is a really easy-going type of character, but has a tendency to overreact. He commonly walks with a slouch, and is usually seen eating snacks.
- The Secret Dealer of District 4
- Bokutachi Days
- When dead and decapitated with the others, minus E-ki, only his head was shown to match A-no's headless body.