|Old Man Ichinose|
|Manga Debut||Chapter 6|
|Anime Debut||Episode 4|
|Japanese Seiyuu||Masahito Yabe|
He is the old man of the Ichinose's clan, whose name is never revealed and also acts as a butler for Nagi. When Nagi was younger, she saw Ojii san struck by lightning for four times, thus resulting in Nagi's fears of lightning.
He is also willing to do just anything for Nagi. For example at Tokiwadai Land, he puts on the Pocky costume so that he could observed Nagi from close distance.