Why do you think his penis is transparent if his skill is not on?
I am so hard for Fujino content right now I can only study the preview pics like a crime scene investigator. I was wondering, is this Inoda's hand?
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It looks like he is holding a phone which is weird if true. The classic "talking to your loved one while having hidden sex" does not seem the case here. Why be invisible when he is holding a phone? Who does Asuna need to talk to other than Kirito and if Kirito is not there why be invisible? Or it could be he is not holding anything.