I Can't Speak, Isekai? is the ninth episode of the Kumo Desu ga, Nani Ka? anime adaptation. It broadcasted on March 5th, 2021.
- Julius returns to the kingdom, but leaves shortly after.
- Kumoko defeats Fire Dragon Rend.
- Administrator Güliedistodiez appears before Kumoko.
- Administrator D interferes and introduces herself to Kumoko after convincing Güliedistodiez to leave.
- The Demon Council takes place.
- Demon Lord Ariel starts the Great Human-Demon War.
- Schlain receives the Hero title.
In Order of Appearance
- Adventurers (Flashback)
- Jolliere Justeau (Flashback)
- Information Brain
- Body Brain
- Magic Brain #1
- Magic Brain #2
- The scene where Julius visits Schlain was taken from Volume 11.
- The scene where Julius talks about the origin of his scarf was also moved to this scene.
- The scene involving Ariel, Güliedistodiez and Shiraori that takes place after the meeting is anime-original.
- Ariel mentions Schlain's japanese name here instead of in the scene where she picks up Julius' scarf after his death, which was removed in the anime.
- Opening: Keep Weaving Your Spider Way (安月名莉子) / Riko Azuna 
- Ending: Ganbare! Kumoko-san (がんばれ! 蜘蛛子さん)