Theres this manga I read before but forgot the name. It involves a brother whose girlfriend canceled his date and he had already bought tickets so he invites his hikikomori like sister to go with him instead. The sister starts out having bed hair but later cleans herself up and goes out with him. The two have a good time and later do it in a hotel Does this sound familiar to anyone?

Smile again.

What the... this is really odd guys, I could have sworn I read this as just a written story years ago, and now it's a manga? DID SOMEONE MANGAFY IT??

Ah yeah here it is http://literotica.com/stories/showstory.php?id=43595

Yeah I don't see Starship Troopers in this manga... but similar plot otherwise.

-ty