Shintaro, Tsumugi, and their supernatural friends decide to go to the occult research club's summer camp. As it's being hosted at Hisui's family's vacation home, they're treated to lavish service while they enjoy the beach and hot spring.
We're told this pond was built back 
in the Edo period by a Tsurumi.
‫قيل لنا أنّ هذه البركة بُنيت في فترة
‫إيدو علي يد فرد من أفراد تسورومي.
Si dice che questo stagno sia stato costruito
nel periodo Edo da uno Tsurumi.
Disseram-nos que este lago foi construído
no período Edo por um Tsurumi.
Говорят, предки семьи Цуруми
построили пруд в период Эдо.