post #1253201 and post #3226571 don't seem like they belong in In Memoriam (pool #1318).
post #1253201 was uploaded in 2012, and so couldn't be in memory of Ishizuka Unshou. I had already removed it and three other posts (which were all uploaded way before 2018) from the pool, but this one was re-added to the pool shortly thereafter.
post #3226571 I'm less sure about, since it was drawn and uploaded today, and Ishizuka Unshou did voice Mr. Satan after Gouri Daisuke's passing in 2010. However, from a cursory glance I was unable to see any indication that this piece was done in memory.