Precious to Grandpa During Rin's summer vacation, Daikichi and Rin visit her father's grave, where they find an ink bottle and bellflowers. Daikichi runs after Masako, Rin's mother, who had just been there, and when he catches up, offers her an unusual proposal. Details Casts Videos Galleries Posters Season Lists Title Precious to Grandpa Genres Animation Drama Release Date 2011-08-26 Episode Runtime 00 Hours 23 Minutes Season Number 1 Episode Number 8 Production Companies Production I.G, dentsu, Sony Music Entertainment, Fuji Television Network, Shodensha, TOHO Ayu Matsuura... Rin Kaga (voice)... Hiroshi Tsuchida... Daikichi Kawachi (voice)... bunny drop - Official Trailer (Trailer) Original Size (1920x1080) Original Size (1920x1080) Original Size (1280x720) Original Size (1920x1080) Original Size (1280x720) Original Size (1280x720) Original Size (780x1170) Original Size (533x800) Original Size (604x905) Original Size (633x950) Original Size (640x960) Original Size (760x1080) Original Size (640x960) Original Size (1055x1500) Original Size (1056x1500) Original Size (1058x1500) Original Size (1064x1500) Original Size (1064x1500) Original Size (1560x2340) Original Size (2000x3000) Original Size (2000x3000) Original Size (664x1000) Season 1 11 Episode(s) 2011-07-08