Oichi

Software Personification
General Information
Name	Oichi-san
Alias	1.0-tan 1.0
Universe/Origin	OS-tan
Debut	2007-02-12[Challenged]ⓘ
Representation
Represents	Windows 1.0
First available	1985-11-20
Developer	🇺🇸 Microsoft
Appearance
Hair Color	Brown
Eye Color	Brown

Infobox Template

Oichi (Japanese: お壱さん, Oichi-san) is an OS-tan that personifies Windows 1.0.

History

It was not known when exactly Oichi first appeared due to her obscurity, however certain sites such as the Nijiura Wiki listed her debut as February 12, 2007. This is by no means verifiable.^{[Challenged]ⓘ}

Character

She is depicted as the matriarch of the Windows OS-tans, and the sister and friend of Ōbaba (the 3.1 OS-tan). Her hobbies are origami and Reversi. These hobbies are derived from the inability to stack windows on top of each other in Windows 1.0, so the windows were arranged like origami papers, and Reversi was commonly featured in screenshots of Windows 1.0.^{[Challenged]ⓘ}

She normally wears a kimono, but Ōbaba has sometimes forced her to wear strange outfits. Her favorite food is tsubuan (red bean paste) yokan. Being born in the Showa period, as per Windows 1.0's release date, she has a retro, old-fashioned mindset and is profoundly nostalgic. She is usually confused by the gap between past and present. When she is angered, she can produce laser beams from her eyes.^{[Challenged]ⓘ}

Trivia

• Outside Japan, she may be known as 1.0-tan by analogy to 95-tan, Me-tan, 2K-tan, and XP-tan, though the 1.0たん name is not used in original Japanese works.