Classroom of the Elite (light novel), tome 04
Syougo/Shôgo/Shougo Kinugasa et Tomose Shunsaku

The second half of the special summer test finds the students duking it out aboard a luxurious cruise ship. Divided into twelve groups patterned after the signs of the Zodiac, all four classes are faced with a devilishly difficult test of their thinking skills. They may have survived the island, but they’re not out of hot water yet!

Titre original : Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e, book 4