Kyoukai Senjou no Horizon Owari no chronicle Mushoku Tensei Tsuki ga Michibiku Isekai Douchuu Tensei Shitara Slime Datta Ken Kumo Desu ga, Nani ka?
Indeed, which is why his readers usually have a whip at the ready, so they can whip him whenever he slacks off.
The OG title is no longer available to be read online if I'm right but you can download PDF files on some sites you can google. I recommend the one that sounds like Myaa