Kami-tachi ni Hirowareta Otoko (By the Grace of the Gods).
You can watch the series on official streaming platforms like Crunchyroll or Hulu. KamitachiOtokoEp1HD23:47 Min
The "paper" suffix likely refers to (紙), which means "paper" in Japanese, though in the title of this series, Kami (神) refers to "Gods." Series Details Kami-tachi ni Hirowareta Otoko (By the Grace of the Gods)
The story follows Ryoma Takebayashi, who is reincarnated by three gods into a fantasy world where he spends three years living in a forest researching and taming various slimes. which means "paper" in Japanese