Set a decade before the main series, this prequel follows Taiyou and Sensui during their student days, and how they first got involved in the game development industry at Solidus Works. *Note: Includes 3 extra chapters.*

1. **Juujikan** (十時間) \[Moto Hagio\] 2. **Boku wa Ochitsuki ga Nai** (ぼくは落ち着きがない) \[Seiko Erisawa\] 3. **Yuuko-chan no Chikamichi** (夕子ちゃんの近道) \[Satoshi Karasuya\] 4. **Mou Speed Haha wa** (猛スピードで母は) \[Toranosuke Shimada\] 5. **Megami no Ishi** (女神の石) \[100%ORANGE\] 6. **Kami Nagara** (噛みながら) \[Yoshitomo Yoshimoto\] 7. **Neta Ato ni** (ねたあとに) \[Masaru Fujimoto\] 8. **Eromanga Shima no Sannin** (エロマンガ島の三人) \[Youhiki\] 9. **Nakanai Onna wa Inai** (泣かない女はいない) \[Yuki Kodama\] 10. **Parallel** (パラレル) \[Ume\] 11. **THE BUNGO** \[Yuzuru Shimazaki\] 12. **Jersey no Futari** (ジャージの二人) \[Sensha Yoshida\] 13. **Sawataru no Sannin** (佐渡の三人) \[Izumi Okaya\] 14. **Side Car ni Inu** (サイドカーに犬) \[Yuuko Uramoto\] 15. **Tannoy no Edinburgh** (タンノイのエジンバラ) \[Katsuo Kawai\]

Manga anthology featuring various short stories inspired by the works of Osamu Dazai 1. **Ha/Leaves** (葉) \[Aiko Sadakane\] 2. **Monmon Nikki** (悶悶日記) \[Ume\] 3. **Hifu to Kokoro** (皮膚と心) \[Eri Sakai\] 4. **Obasute/Putting Granny Out to Die** (姥捨) \[Tetuzoh Okadaya\] 5. **Shinyuu Koukan** (親友交歓) \[Jun Hanyunyuu\] 6. **Dare mo Shiranu** (誰も知らぬ) \[Yukiko Asano\] 7. **Haji/Shame** (恥) \[Hirochi Maki\] 8. **Das Gemeine** (ダス・ゲマイネ) \[Tori Tabii\]