Kiss×sis OAD / Season 1 Season guide Kiss×sis OAD: Season 1 12 episodes Premiered Dec 22, 2008 Updated Jul 23, 2026 Spoiler-safe 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 Episode 1 Dec 22, 2008 · 24 min S1·E2 Core Episode 2 May 22, 2009 · 23 min S1·E3 Core Episode 3 Nov 20, 2009 · 23 min S1·E4 Core Episode 4 Jun 4, 2010 · 23 min S1·E5 Core Episode 5 Nov 22, 2010 · 23 min S1·E6 Core Episode 6 Jun 20, 2011 · 26 min S1·E7 Core Episode 7 Nov 30, 2011 · 24 min S1·E8 Core Episode 8 Jul 6, 2012 · 25 min S1·E9 Core Episode 9 Feb 6, 2013 · 22 min S1·E10 Core Episode 10 Nov 6, 2013 · 23 min S1·E11 Mytharc Episode 11 Aug 6, 2014 · 24 min S1·E12 Mytharc Episode 12 Apr 6, 2015 · 23 min