Ink MK
X
Nezuko!Reader
Plot - In episode 2 of season 4, when Y/n gets sucked into the scroll with Tang, Pigsy, Sandy, and MO. Since she is kinda like MK. She just gets sent to a random page in the scroll and that's when she met Ink MK.
Y/n of course didn't understand why he looks like MK and why he decided to bother her. But she's way to sleepy to fight and talk so she decided to sleep.
So I guess the two spend time together until he leaves when Tang, Mei, Pigsy, and Sandy + MO appear to get her. And so on.
But since the power of fanfic, let's say that Y/n can talk with Ink MK in her spare time due to somehow getting her hands on a scroll she stole from Azure Lion :P.