Mangas
おじいちゃんは少年探偵, 我的爷爷是少年侦探, Grampa is a Boy Detective, Ojii-chan is a shonen detective?, Ojii-chan wa Shounen Tantei
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.
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?
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.