Reika's best known for her debut in "Death TV," where she initially came across as arrogant—though it quickly became clear she was actually vulnerable and desperate for someone to rely on. That case left an impression on her, particularly Kinda'ichi. She developed a crush on him and, without letting him know who it was from, sent him a heart-shaped chocolate for Valentine's Day. It's basically been a running thing ever since, with Reika and Miyuki clearly vying for his attention.
Her past catches up with her in "Playing the Fool," revealing details even Reika herself had forgotten. Later, "Reika's Kidnapping" drops a major bombshell: her biological mother is established actress Keiko Mitamura. Reika never finds out, though—it stays a secret between Keiko and Kinda'ichi for the entire series.
Content compiled by AnimeList.moe from publicly available sources.
