wonder if this is like the artist's hentai where chen is being possessed by the artist's character and is flashing or if this is chen who suddenly became naughty.

Zekana said:
wonder if this is like the artist's hentai where chen is being possessed by the artist's character and is flashing or if this is chen who suddenly became naughty.

It's not unlikely. It's companion image is futanari and that's another function of the TSF book from the said series.