Tên truyện: Ojiichan wa Shounen Tantei
Tên khác: おじいちゃんは少年探偵; Ojii-chan is a shonen detective?; Ojii-chan wa Shounen Tantei; Old man is a boy detective?
Tác giả: Inoue Yoshihisa
Thể loại: Comedy, Ecchi, Mystery, Romance, Shotacon, Shounen, Supernatural
Tình trạng: Completed
Năm phát hành: 2006
Basically, the teenage detective kiddo was frozen by some EVIL MASTERMIND PROFESSOR back in near-mid-1900’s, and gets unfrozen in the 2000’s by his granddaughter.
Hilarity ensues as he encounters weird new stuff and does silly blunders in his daily life with his granddaughter, Hikari.