A little bit of a similarity
Maybe you'll say this matter didn't worth creating a thread, but....Oh well, It already is created anyways....
So, it is a picture from _summer OVA - look at a girl at top left corner - you'll see a girl with blue hair. Despite hair colour doesn't she resemble Sawachika? For me she does. At least her hairstyle is very similar. Her facial expression though suits Yakumo more I guess. A kind of a mixture we have here. The funniest thing here is that her attitude is close to Akira's. Which was totally unexpected to me.
Speaking of which: this OVA is really good, i recomend you all to watch it. Torrent can be got on Tokyotosho. Though i can upload it if torrent can't be used for some reason.
And yeah, image taken from http://anime.softgarage.com/_summer/