Case Closed - Season 1 Episode 659 The Joint Investigation with First Love (1)
The Detective Boys discover officer Chiba's has been vandalized with a threatening word. Realizing is the culprit is the same person who has been on a vandalism spree that month, the Detective Boys push Chiba into investigating it with his first love, Naeko Miike. They investigate an underground parking lot where the vandalism occur; There, a rear-end collision is caused by the vandalism culprit. The police seal off the parking lot leaving three people as the suspects. During the investigation, a draft removes Naeko's hat revealing her face to Chiba.
- Genre: Animation, Mystery, Comedy
- Studio: YTV
- Keyword: japan, detective, secret identity, high school, cop, based on manga, mysterious, anime, age change, case, adventure
- Cast: Minami Takayama, Kappei Yamaguchi, Wakana Yamazaki, Akira Kamiya, Rikiya Koyama, Megumi Hayashibara