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.
I never knew the ocean 
could sparkle like this.
‫لم أكن أعرف أن البحر يتلألأ هكذا.
Ich wusste gar nicht,
dass das Meer so funkelt.
No sabía que el mar
brillara de esta manera.
No sabía que el mar
brillara de esta manera.
Je ne savais pas
que la mer brillait tant.
Non sapevo che il mare potesse brillare così.
Eu nunca imaginei que o oceano
pudesse brilhar assim.
Море так сверкает!
ทะเลเนี่ยระยิบระยับขนาดนี้เลยสินะคะ