"100 mono Tobira" (100もの扉; lit. "100 Doors") is a song by Japanese singer-songwriters Rina Aiuchi and U-ka Saegusa. It was released on 14 June 2006 through Giza Studio, for the soundtrack of the Japanese animated television series Case Closed, for which the singers formed a special duo, Rina Aiuchi & U-ka Saegusa. The single reached number eight in Japan and has sold over 29,975 copies nationwide.[1] The Japanese idol group, Sparkling Point were credited as the backing vocals for the song.
Track listing
CD single| Title | Writer(s) | Arranger(s) | 
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| 1. | "100 mono Tobira" |  |  | 3:37 | 
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| 2. | "Nazo" (Rearrange Version) |  | Hayama | 3:39 | 
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| 3. | "Still for Your Love" (Rearrange Version) |  | Hayama | 3:44 | 
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| 4. | "100 mono Tobira" (TV Version) |  | Hayama | 2:01 | 
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| 5. | "100 mono Tobira" (Instrumental) |  | Hayama | 3:37 | 
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Limited Edition Bonus DVD| Title | Writer(s) | 
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| 1. | "100 mono Tobira" (Music video) |  |  | 
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| 2. | "100 mono Tobira" (Live Clip from Thursday Live 06.3.23 @ Hills Pan Kojyo) |  |  | 
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Charts
Certification and sales
Release history
References
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| Singles |  | 
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| Singles |  | 
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