You brought flowers to place on top of the place where a yakuza took a spoon and killed twenty people, and there is now a burial happening. You carefully toss the flowers in with the dirt and everything is buried together.
Once the burial is complete the souls (そう) of all the dead people come floating up and out of the ground. "Thaaannk YooOoOO~" they moan, as they ascend to the sky.
Currently there are no similar looking kanji which exist in the WaniKani learning system