Isekai Onsen Paradise
Original Title：名湯『異世界の湯』開拓記 ~アラフォー温泉マニアの転生先は, のんびり温泉天国でした~
Languages:
- English: Isekai Onsen Paradise
- Chinese: 人气温泉『异世界温泉』开拓记 ～40岁左右的温泉爱好者转世到了悠闲的温泉天堂～
- Japanese: 名湯『異世界の湯』開拓記 ~アラフォー温泉マニアの転生先は, のんびり温泉天国でした~
"Isekai Onsen Paradise" (Meitō "Isekai no Yu" Kaitaku-ki: AraFō Onsen Mania Tensei-saki wa, Nonbiri Onsen Tengoku Deshita) is a Japanese light novel series written by Konao Menrui and illustrated by Yoshitake. The story follows Kōzō Yukawa, a 40-year-old hot springs enthusiast who dies after falling off a cliff while searching for hot springs and is reincarnated into a fantasy world by an Inari spirit. Retaining his love for hot springs, he quickly discovers one and attracts various women, including the Inari's messenger, Mayudama, and some elves, to bathe with him. The series began serialization online in September 2019 on Hobby Japan's user-generated novel publishing website Novel Up Plus and was later published under Hobby Japan's HJ Novels imprint in August 2021. A manga adaptation by Masahito Sasaki was serialized from November 2021 to December 2023, and a short-form anime television series produced by BloomZ and Wolfsbane aired from January to March 2024. The anime portrays Kōzō's adventures in finding hot springs and sharing them with various female characters in the alternate world. It combines elements of isekai, hot springs, and harem comedy.