In this series of illustrations, Koupen-chan demonstrates the recommended way of enjoying the sauna!
サウナに挑むコウペンちゃん pic.twitter.com/u1G4XqNPVG
— るるてあ (@k_r_r_l_l_) November 19, 2021
サウナの後、水風呂に挑むコウペンちゃん pic.twitter.com/ejjsEnmDwG
— るるてあ (@k_r_r_l_l_) November 20, 2021
整う人とコウペンちゃん pic.twitter.com/KYzUh2Oj2J
— るるてあ (@k_r_r_l_l_) November 21, 2021
水分補給する人とコウペンちゃん pic.twitter.com/45GLcN7TuW
— るるてあ (@k_r_r_l_l_) November 22, 2021
岩盤浴を楽しむコウペンちゃん pic.twitter.com/anBLmKrccC
— るるてあ (@k_r_r_l_l_) November 23, 2021
C: Koupen-chan attempting the sauna
— kou~pen~chan!! (translations) (@koupenchan_yaku) November 26, 2021
K: Oh dear ~ https://t.co/VeDDklwlZQ
C: After the sauna, Koupen-chan takes on the cold bath
— kou~pen~chan!! (translations) (@koupenchan_yaku) November 26, 2021
K: Oh~ https://t.co/LWAjcJ3n1N
C: People who are in a state of well-being and Koupen-chan
— kou~pen~chan!! (translations) (@koupenchan_yaku) November 26, 2021
K: Relaxing is great...*
1/2 https://t.co/nosRWv0OZd
C: People who rehydrate and Koupen-chan
— kou~pen~chan!! (translations) (@koupenchan_yaku) November 26, 2021
K: Rehydrating is great!
<-- Oropo
TN: Oropo is a mixed drink of Oranamin C and Pocari Sweat to help you rehydrate after sweating it out in the sauna.https://t.co/pJBk9TTD4y https://t.co/9PjRJOob2B
C: Koupen-chan enjoying the stone sauna
— kou~pen~chan!! (translations) (@koupenchan_yaku) November 26, 2021
K: I'm getting warm... https://t.co/A9jxp7sc19
References
Oropo - English article from moshi moshi nippon
totonou in the sauna context - Japanese article detailing sauna manners, japanese article on the meaning (this one is much more concise and easier to understand).