The story of the day when the tail was bitten / Season 1 Season guide The story of the day when the tail was bitten: Season 1 13 episodes Premiered Sep 17, 2020 Updated Jul 19, 2026 Spoiler-safe Advertisement Season 1 Episodes Episode Guide 🛡️ SPOILER SHIELD Season 1 Progress Shield All Safe I'm Watching Caught Up Season: Season 1 Last Watched: None (Not started) Episode 1 Episode 2 Episode 3 Episode 4 Episode 5 Episode 6 Episode 7 Episode 8 Episode 9 Episode 10 Episode 138 Episode 139 Episode 140 Future titles & synopses blurred. Tap "Reveal" on any card to peek. Binge Efficiency Engine Season 1: Filler vs. Essential Canon Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests. 23% 77% Mytharc (3): Crucial lore & season climaxes Core (10): Character development & subplots Side Quest (0): Standalone / filler Show All (13) Crucial Mytharc (3) Essential Canon (13) S1·E1 Mytharc Episode 1 Sep 17, 2020 S1·E2 Core Episode 2 Sep 24, 2020 S1·E3 Core Episode 3 Oct 8, 2020 S1·E4 Core Episode 4 Oct 15, 2020 S1·E5 Core Episode 5 Oct 22, 2020 S1·E6 Core Episode 6 Oct 29, 2020 S1·E7 Core Episode 7 Nov 5, 2020 S1·E8 Core Episode 8 Nov 12, 2020 S1·E9 Core Episode 9 Nov 19, 2020 S1·E10 Core Episode 10 Nov 26, 2020 S1·E138 Core Episode 138 Aug 15, 2024 · 83 min S1·E139 Mytharc Episode 139 Aug 22, 2024 · 79 min S1·E140 Mytharc Episode 140 Aug 29, 2024 Advertisement