This comes from the "Haikyo Shoujo" collection too. As you'll notice all the oneshots from that collection are connected by junk piles/ruins and hallucinations. This oneshot, in particular, has a nice life lesson -- one I recently learned myself. I hope you all take comfort from this oneshot like I did.
And now onto the release!
Links to "Ogaku ga Mieru Otoko": (ZIP) (PDF)
Next up will be Ore to Atashi no Kareshima-sama chapter 5!