At the IS Academy students are training to become pilots for the Infinite Stratos weapon system. It so happens that this system can only be operated by females, with the exception of Orimura Ichika.
[UPDATE1] By reader request, this fanservice compilation has been re-uploaded and this blog post has been updated. delmogeny may have retired a long time ago but his fanservice compilations still continue to be popular…
[NOTE1] This comp does have nipples but only one or two brief scenes which are probably from OVA1 instead of TV1. The great majority of this comp does not have nipples since it is from the TV show and not the OVA. Sorry about that.
Based on a series of Light Novels of the same name, This adaptation was helmed by 8-Bit in 2011.