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.
Hisui-sama seemed to be 
having so much fun today.
‫بدت هيسوي-ساما مستمتعة كثيرًا اليوم.
So glücklich haben wir Hisui-sama
seit langer Zeit nicht mehr erlebt.
Hisui se ha divertido mucho.
Hoy Hisui se ha divertido mucho.
Mlle Hisui semblait s’amuser.
Oggi la signorina Hisui
sembrava divertirsi molto.
A Hisui-sama parecia estar
se divertindo muito hoje.
Хисуи сегодня необычайно весела.
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