From what I read of the google translated description on Pixiv, this is not related to his other comics. Needless to say I think it might have been a 9001/10 troll on the western fanbase if not the japanese as well.
jojorocko said: *Looks at Seki's Retaisai comics* fluffy panda meiling is...artist self insert??!!
OOZ662 said on post #915948: EDIT: Wait...does that mean that what we thought was a giant fluffy panda Meiling this whole time was actually just an artist self-insert?! That might actually make SENSE. MADNESS.