This is the OS-tan for Windows 98SE, for her OS-kun counterpart, see 98-kun and 98SE-kun.
|Common name:||Windows 98 SE-tan|
|Also known as:||Secchan, 98 Second Edition|
|Proposed human name(s):|
|Height:||*none officially listed|
|Hair color:||grey-blue (most common), lilac or light blue|
|Eye color:||blue or lilac|
|Weapon of choice:|
|OS-tan Annex Project Faction:||Windows Family|
|System Personified:||Windows 98 (second edition)|
|Debut:||v.4.10.2222A (5 May 1999)|
|Latest Stable Release:||unknown|
This character represents the second edition of Windows 98. She is represented as a small and shy pre-teen girl with short light blue or light purple hair with a small side ponytail held by a hairtie with two cherry-coloured balls on the ends, the Windows logo as part of a necktie and a green + white sailor school uniform with SE printed on the front. Alternately, her necktie features a clip on the front that reads "SE".
She is usually seen with 98-tan, and like 98-tan she is shy, but unlike her she is prone to aggression, is more stubborn, is not a futanari and has an unusual hatred towards male genetalia. She carries around a can opener or bottle opener (with the intent to castrate) and her most commonly used phrase is translated as "All dicks seriously need to die." or "The dicks must die". Homeo is her primary victim for these attempted attacks, though she has been known to go after others. This behavior may have stemmed from her sister's futanari side.
Like 98-tan, 98SE's earliest design was a stick-figured snack box with a face and version number drawn in crayon, used as a placeholder, but now both girls now make regular use of these as mechanical suits.
The mech-box used by 98 is blue in colour, and likewise the 98SE mech-box has a green theme. The mechs are sometimes shown as guardians or friends to the 98-tans, otherwise the two girls can be seated inside them as pilots. The box sizes can vary, ranging from doll-like when carried by the girls to taller than an adult when they ride inside them. While usually used as toys or weapons, they can serve other purposes, such as a clubhouse, a shelter, or a place to hide. (The boxes also appear to be less stable than the girls themselves; When a non-DOS based OS-tan enters the box, it has a tendency to fall apart.)