Strangely glowing stone. It gives off the same airy feeling that I get in the graveyard.
How to GetEdit
Go back to Prague after getting Yuri back and enter the bar. Talk to Owner Gismot who will ask you to check on Guard Darcie, who is in dire straits as there is no tissue, give him Tissues (obtained as a dummy prize from the Lottery) then try to leave the bar, he will rush out and give you the Air Gravestone.
Allows Yuri to gain his third-level Wind class fusion, provided that all other conditions are met.