found it in pixiv Arpeggio feed at http://www.pixiv.net/member_illust.php?mode=medium&illust_id=40241923

the loli looks like Iona, but who's the blond? oh well, cute futa story anyway

please rename

The other character is Iori Watanuki, also from Arpeggio of Blue Steel. She's 401's engineer.

@MSimm1: I don't think it's Kongou, the entry on pixiv doesn't have that tag. The color is also kind of wrong. It does have the 四月一日いおり though, and that's Iori.

Base +9, Red of EHCOVE +39

Artist: Hakaba Yodoyume (墓場淀夢)

Homepage: http://hakablo.blog.fc2.com/

Pixiv: http://www.pixiv.net/member.php?id=1055752

Blonde hair girl: Hermitage (Name on Artists website)

Hope this helps

@ MilkmanDan, your right, I looked at short pig tails and didn't translate the description of the comic at the website

Thank you

Base +22, Red of EHCOVE +39