Kokoro Library / Season 1 ▦ Season guide Kokoro Library: Season 1 12 episodes Premiered Oct 12, 2001 Updated Oct 7, 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 11 Episode 12 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. 25% 75% Mytharc (3): Crucial lore & season climaxes Core (9): Character development & subplots Side Quest (0): Standalone / filler Show All (12) Crucial Mytharc (3) Essential Canon (12) S1·E1 Mytharc I'll Become A Librarian Oct 12, 2001 · 25 min S1·E2 Core What Can I do at This Moment Oct 19, 2001 · 25 min S1·E3 Core The Secret of Ms. Kifin Oct 26, 2001 · 25 min S1·E4 Core A Librarian's Motto Nov 2, 2001 · 25 min S1·E5 Core The Targeted Library Nov 9, 2001 · 25 min S1·E6 Core The Comparoid Librarian Nov 16, 2001 · 25 min S1·E7 Core The Day Kokoro is Gone Nov 23, 2001 · 25 min S1·E8 Core I Want to See My Mom Nov 30, 2001 · 25 min S1·E9 Core A Miracle Dec 7, 2001 · 25 min S1·E10 Core The Library May Disappear Dec 14, 2001 · 25 min S1·E11 Mytharc Joldy's Diary Dec 21, 2001 · 25 min S1·E12 Mytharc Kokoro Aruto Iina Dec 28, 2001 · 25 min Advertisement