Protocol: Rain / Season 1 Season guide Protocol: Rain: Season 1 12 episodes Premiered Oct 8, 2023 Updated Sep 9, 2026 Spoiler-safe Advertisement Episodes S1·E1 Cold Reboot Oct 8, 2023 · 23 min S1·E2 Foreordained Chance Encounter: Multiplexer Oct 15, 2023 · 23 min S1·E3 Our Beginning: Astable Multivibrator Oct 22, 2023 · 23 min S1·E4 A Promise That Connects: 3 Way Handshaking Oct 29, 2023 · 23 min S1·E5 Single-Minded Determination: Logic Gate Nov 5, 2023 · 23 min S1·E6 Lingering Memory: One Time Programmable ROM Nov 12, 2023 · 23 min S1·E7 Innocent Reminisces: Solidstate Memory Nov 19, 2023 · 23 min S1·E8 Turning Point: Flip Flop Nov 26, 2023 · 23 min S1·E9 Crumbling New Life: Latch Up Dec 3, 2023 · 23 min S1·E10 Unyielding Wish: XOR Dec 10, 2023 · 23 min S1·E11 All or Nothing: Schmitt Trigger Dec 17, 2023 · 23 min S1·E12 Promise: Protocol Dec 24, 2023 · 23 min