The anime adaptation of 86 EIGHTY-SIX produced by A-1 Pictures consists of exactly 23 standard episodes. There is no "Episode 105" or an official Episode 10.5 for Part 2.
A Typo That Became a Legend: The most likely origin: A fan mistakenly typed "105" instead of "episodes 1, 0, and 5" (referring to the recap episode). The error spread across Reddit and Twitter, and the community, loving the absurdity, adopted "86 Part 2 Episode 105" as a joking term for the definitive, director’s-cut edition of the finale that exists only in their memories. 86 part 2 episode 105
If you are looking at unofficial streaming numbering, this likely refers to a special recap episode or a specific breakdown of Episode 21 or 22. Below is a high-quality blog post breaking down the actual climax of Part 2 based on the official release. The anime adaptation of 86 EIGHTY-SIX produced by
Given the nature of the series, episode 105 likely features: If you are looking at unofficial streaming numbering,
If you saw a reference to "Episode 105," it could be: