Kaiju No. 8 gets a four-episode short in September. Our five entries hold nothing.

A trailer has arrived for a new Kaiju No. 8 anime short, and it lays out a run of four episodes beginning on September 5, according to Anime News Network. A separate Anime Corner headline the same day gave the title as Kaiju No. 8: Narumi's Week at Work. Visuals were also unveiled for a Kafka birthday occasion and for a Defense Force Boot Camp event in Tachikawa.

What our index holds for Kaiju No. 8

Five entries carry the name:

• Kaiju No. 8, a television series with 12 episodes recorded, from 2024
• Kaiju No. 8 Season 2, a television series with 11 episodes recorded, from 2025
• Kaiju No. 8: Mission Recon, recorded as a film
• Kaiju No.8: Hoshina's Day Off, recorded as a special
• minute! Kaiju No. 8, recorded as an ONA with 31 episodes, from 2025

Across all five, our index holds zero episode source rows. Not zero free rows. Zero rows of any kind. All five live pages were fetched from animesphere.app today, and each is titled "Watch", then that entry's name, then "Online". None of them states a free-episode count. On our site, a page that does hold free episodes carries the word "Free" in that title instead. As for why the five sit empty, we do not know.

A complete run that is free here: Sonic X: The Metarex Saga

Sonic X: The Metarex Saga is free on AnimeSphere at 26 of 26 episodes, which is the whole entry. The live page states "Watch 26 episodes of Sonic X: The Metarex Saga free and legal on AnimeSphere", and it shows no prompt about the free run running out.

All 26 sit on the Anime! on TMS Official Channel, which carries a YouTube verified badge. The country list on these rows is unrestricted. There is no region gate.

Every one of the 26 was checked against its upload today. All 26 resolved with no fetch failures, they came back as 26 distinct episode identities with no duplicates, and no case turned up of a single video filed against two episode numbers. Every one of the 26 upload titles carries the words English Dub and Full Episode. Two were opened in full, the first and the last: they run 1,296 and 1,243 seconds against a recorded episode length of 25 minutes, so these are whole episodes rather than clips. Both report an automatic English caption track, which means the audio is English.

One wrinkle is worth flagging before anyone opens a video. The uploads number themselves continuously across the wider Sonic X run, while our index numbers this entry from its own beginning, so the labels on the uploads do not match the numbers our index uses. The offset is consistent across all 26, and the count of 26 is the complete entry either way.