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Synopsis
Ayaka and Issei accidentally took the pill that can turn themselves 5 years old younger whenever they panic. Issei's dad tried to find the antidote but the result change nothing aside from that they will get 5 years older when they get angry. (Source: MangaUpdates)
FAQ
Naisho no Kaunto 5 has 3 volumes.
Naisho no Kaunto 5 is currently finished.
Naisho no Kaunto 5 was written by Yukari Kawachi.
Naisho no Kaunto 5 was published 1991 to ?.