It is purely fanon. I mean, do not get me wrong, I LOVE the headcanon and idea of it but it is strange to me even so.

I guess one could blame his wonky sleep schedule- in which case blame the spirit of the Ring, but yeah.

Know who else should totally have bags under his eyes in canon but doesn’t? 
Seto Kaiba.

The guy is up damn near 24/7 and always working on something in between pining after defeating Yugi (Yami). He just must some great makeup to hide it all to keep looking professional.

Know who has bags under his eyes in canon though?