This is the list of the major works of Yugen. It also includes interviews. The latest information on Yugen’s works is delivered via e-mail magazine (Japanese) and Twitter (English).
In progress
| Titles (tentative) | Comments | Type |
| Abyss | A prequel to “Hosshoji the Rocket Temple” | Short story |
| TBA | Hosshoji the Rocket Temple, a novel | Novel |
On sale
| Titles | Release date | Number of characters |
| “Tempus Fugit” (short story) | 2019-10-30 | 33590 characters |
| Included in “Toki wo aruku” (“Walking through Time”), a time-themed SF anthology published by Tokyo Sogensha. | ||
| 光阴似箭 | ||
| “Tempus Fugit” Chinese version. Translated by 惜狐. Included in the Chinese science fiction magazine Science Fiction World translation issue [科幻世界 訳文版] in November 2020. | ||
| “Hosshoji the Rocket Temple” (The 9th Sogen SF Short Story Award winner) | 2018-06-29 | 32,769 characters |
| Hosshoji is a nine-storied pagoda that is also a spaceship. The astromonks begin an adventurous journey to visit the Great Buddha on a faraway planet! On sale as an e-book from Tokyo Sogensha. The audiobook version is available from Audible.co.jp and Kikubon. | ||
| “Respond, Sonshoji” (Prologue to Hosshoji the Rocket Temple) | ||
| “Final Anchors” (The Grand Prix winner of the 5th Nikkei Hoshi Awards) | 2018-08-15 | 20141 characters |
| Two AI self-driving cars are about to collide. They have to decide which one should survive in 0.5 seconds. Final Anchors is on sale as an e-book, which is published from Hayakawa Shobo.. | ||
| 最后的锚栓 | 2019-10-09 | |
| “Final Anchors” Chinese version. Translated by 郑双. Included in the Chinese science fiction magazine Science Fiction World translation issue [科幻世界 訳文版] with illustrations in October 2019. 当汽车迎来拥有“人格”的那一天 日经中文网 (nikkei.com) 这是一部适用于未来的交通法？解读硬核科幻『最后的锚栓』 – 腾讯云开发者社区-腾讯云 (tencent.com) | ||
| “Lotus Eater” (Winner of the merit award of the 5th Nikkei Hoshi Awards). Available at Honto for free) | 2018-03-08 | 9987 characters |
| A man’s precious memories are locked in by a piece of ransomware. He does everything to regain his memories of his beloved sister, but instead, finds a horrifying truth. | ||
| 食莲人 | ||
| “Lotus Eater” Chinese version. Translated by 树懒. Included in the Chinese science fiction magazine Science Fiction World translation issue [科幻世界 訳文版] with an illustration in May 2023. | ||
| Edo 1910 | 2018-04-20 | 45236 characters |
| A millionaire vlogger goes back in time and arrives in Edo, old Tokyo. What he witnesses is a giant wooden robot leading a Daimyo procession. It is a world without the Meiji Restoration, where the countries other than Japan isolated themselves. This Edo is ignorant of modernization, and it is visited by “aliens” who are from a different world. Trading with them has developed a civilization based on wood, instead of iron. | ||
| 江戸1910 | ||
| “Edo 1910” Chinese translation. Translated by 惜狐. Included in the Chinese science fiction magazine Science Fiction World translation issue [科幻世界 訳文版] in December 2022. |
Essays and interviews
| Titles | Media | Release date |
| Interview with Yashima Yugen | Web Magazine Anima Solaris | 2019-05-27 |
| “Literature that makes readers think” | Hoshi Shinichi official website | 2019-05-05 |
Other works
| Titles | Release date | Number of characters |
| Men Are Islands | 2017-09-21 | 18946 characters |
| Humanity is “initialized” by a nuclear war. A fraction of humans randomly selected and transferred to an alien planet. They discuss how to start humanity all over. | ||
| Collective Schooling — Town Divers | 2017-12-21 | 23209 characters |
| In a post-apocalyptic town, a group of junior high school students fights with mysterious enemies on their way home. They cannot rely on adults. They have to outsmart these monsters. | ||
| The Sea of Incarnation | 2018-01-19 | 26302 characters |
| A bio-AI is about to gain a superhuman — almost divine ability. What is the best way to prevent this “AI explosion”? | ||
| StarX’d | 2018-03-08 | 17065 characters |
| Sentient stars imitate humans and play “Romeo and Juliet.” Eventually, they commit themselves to it in an unexpected way. Why is humanity alone in the universe? An answer to Fermi Paradox is here. | ||
| Robot Boy | 2018-07-12 | 6626 characters |
| A robot boy arrives in a junior high school classroom where a boy is the target of bullying. What is the agenda of the robot boy? What can robots do? What are the things they can’t do? And what they should do with humans? |