Wow! For the first time ever, I have come across a story that is not just regression. I was wondering if the author would've deleted Hee Jae's younger self, but no! Young Hee Jae / Ilrok is a real person, with a past and a mysterious janitor hyung? How Hee Jae will actually play into Ilrok's past is curious. Watching Ilrok behave like a feral cat is amusing and adorbs, as well as Hee Jae's interacting with him as well XD