Nanana's Buried Treasure (TV)

The names of many of the characters involve puns or references. The character Ikkyuu Tensai (壱級天災) translates to First Class Calamity. Her first name, “Tensai”, has the same reading as the word (天才) which means genius. Her last name, “Ikkyuu”, has the same reading as the name of the main character in the 1975 anime Ikkyuu san (一休さん). In that anime, the 15th century Buddhist monk Ikkyuu Soujun is portrayed during his childhood years as a mischievous but clever monk-in-training at Ankokuji Temple. Both names are a reference to the superior mental abilities of the blond haired detective.

Another name pun is the name of the character Hoshino Daruku (星埜ダルク). His last name, “Hoshino”, is made up of the kanji character for star; “hoshi” (星) and the kanji character for a field, “no” (埜). The second character can also mean “hidden structural member” which is a reference to how Daruku hides his masculinity behind maid clothes. His first name is just a play on the English word “Dark” which is a reference to his dark skin.

In episode 1, around 19:32, Nanana is seen playing the video game "Terraria".

In episode 7, the main characters can be seen watching Star Driver.