Episodes 509-510: Red, White, Yellow, the Junior Detective League & Conan vs. The Double Cipher Mystery★★★

Haibara is alive but seems to have just fainted, and Conan showed off again without waiting for him to wake up and ask about the nicknames in his diary. You really need to have a good imagination, otherwise, sometimes you just can't figure it out. Haibara's Black Organization radar went off, and it was to find out who pushed Mitsuhiko down (Mitsuhiko truly loves Ai). Also, the important character Okoya Subaru appeared later. I'm afraid of spoiling it, so I won't reveal his true identity.