Can't identify the source, but may I be allowed to say it makes perfect sense? Life must have a PLOT or it will be meaningless. *pitches tent* EDIT: Just some mild ecchi manga. My disappointment is immeasurable and my... ahem... day... is ruined!
Kaiko sareta Ankoku Heishi (30-dai) no Slow na Second Life chapter 1. fyi, you can use SauceNAO for finding a good deal of images, and it deals very well with full manga pages.