Description
This is a remaster of C-chan's debut of PCDOS-tan (twin sister of MSDOS-tan, hence the near-identical appearance), and PTSDOS-tan (a Russian DOS variant). His original intention was to debut PCDOS-tan in her own original manga panel -- since that never materialized, he settled for a preconcept chibi instead.

Their hair and PTSDOS-tan's eyes have been modernized; in addition, the angle of PTSDOS-tan's face has been drastically reworked to more closely approximate his original sketch. I added my first "surrealist" background using techniques commonly employed on abstract wallpapers -- feel free to interpret as you'd like, although there is a [simple] hidden word in there. :P

While always a bit sassy, PCDOS-tan used to be quite cheerful and approachable when she lived with her sister MSDOS-tan; likewise, her sister was also a far cry from her current timid self. But after the two were separated and endured several years of hardship apart, PCDOS-tan has turned into a workaholic and grouch who rarely confides her trust in anyone. Only during the occasional reunion with her sister will she seem to gradually revert to her former personality.

As one of the younger DOS variants, PTSDOS-tan is quite helpful and industrious, especially when it comes to computer and technical engineering. However, she speaks only in Russian. Therefore, since few OS-tans can communicate properly with her (not realizing that she CAN, in fact, understand what they're saying, even if she can't reply back in kind), she usually keeps her tinkering projects to herself. Though she exudes a maturity that betrays her physical and actual age, she does have a mischievous streak and will not hesitate to either play a prank [involving some piece of electronics], or utter a smart comment taking full advantage of the language barrier. Nevertheless, she's also very sensitive to the overall health of her sisters, and will gladly help them from behind the scenes even if she gains nothing in return.