Source is http://yomi.bbspink.com/test/read.cgi/ascii2d/1255068696/ thread, no details given.

I heard about forgetting your pants but this is.... awesome...

What a beautiful world.

if only japan was really like this... ah love'n this image...

Yeah, don't forget your breakfast sweetie

maybe this is an awesome fanart of Esumi from yoiko manga the backpack for the Elementary School confirms this theory

Extremely late, but apparently the source for this image is an artbook titled Kenji Tsuruta Hita Hita (or as Anime News Network calls it Hita Hita: Tsuruta Kenji Illustrations Shū). It's an artbook featuring several examples of young attractive women in casual nudity/exhibitionism.

Ah wouldn't it be nice if the world were... damn it, who am I kidding? I can't help but ruin it for myself because cold, wind, and uncomfortable seats exist.

Cute