Zero_Hour said: I wonder where the old turtle hangs out nowadays. I hope Reimu's hunger hasn't compelled her to make turtle soup.
In touhou wiki "According to ZUN, Genjii is probably still living in the lake in the back of the shrine" and "In Strange and Bright Nature Deity Chapter 12, Reimu and Marisa have a talk about Glowing Moss. Reimu said it would be nice to transfer it to the pond in the back of the Shrine and Marisa responds that she could make it grow there on the turtles' backs. Even if it was more than one turtle, it could be a reference to Genjii." Even though it's a probally from Zun and Genjiis name not mentioned in SaBND ch12 but mentioned turtled living there I'll still say Genjii is out back of the shrine.