
I want a whole series of just these two's mundane interactions and day to day activities.

oh! Have you seen 19 Days? It's the closest I've come to anything like that. There's light sprinkles of drama but stays really light-hearted and funny throughout with lots of mundane day to day vignettes. The characters are also really endearing. Highly recommended if you haven't seen it yet!
http://www.mangago.zone/read-manga/19_days/
I feel like things are about to wrap up and start coming to an end now. Not gonna lie, it's slightly underwhelming considering the amount of built up to the drama and reveals and everything. I really hope Heejae gets into an accident and get his IQ+memories back. That would be pretty exciting.
Ikr I hope it happens