|Full Name||Madobe Yū (right) and Madobe Ai (left)|
|Personifies||Windows 8 and 8.1|
|Hair Color||Dark Blonde|
|Eye Color||Blue, with rainbow reflect|
Yū Madobe (Japanese: 窓辺ゆう, Madobe Yū) and Ai Madobe (Japanese: 窓辺あい, Madobe Ai) are OS-tans that personify Microsoft Windows 8 and 8.1.
Their first formal mention was in an Akiba-PC article from October 11 2012, announcing the Windows 8 Pro DSP Release Commemorative Packs by Windows Navi+ featuring the sisters, that came with some copies of Windows 8 during its launch in Japan in 2012. However, the Yū's silhouette already appears in a video from April 25 2012 that features Claudia Madobe.
Merchandise featuring Yū and Ai Madobe
- Windows 8 Pro DSP Release Commemorative Packs
- Mir8cle Days / Whatever the future holds
- Windows 8.1 Pro DSP Release Commemorative Pack
- Illustration collection of Nanami, Yū and Ai Madobe
- 2014 Spring Madobe Family Original Theme Pack
- In the Akihabara Moe Characters Contests, Yū ranked third and Ai fourth in 2012.
- Among the members of the Madobe Family that participated in the contest, Ai is the only one who never reached a top 3 position, though she was only 4 votes behind Yū in 2012.