Main character is a teacher at a private girls' school. One day he and his students set off on excursion to Yokohama port and then by luxurious liner "Ingleb" to Hong Kong. However, they fall into a trap set by someone just before departure. Will they survive?
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限时系统比较像pil社的cherryjam和学园索多玛,但是与以上两作的选项之处的倒计时不同,本作是包括阅读文字+移动在内的闭锁空间脱出型adv,没条女主的路线有不同的计时展开,游戏流程很短每条线路只有一个小时,还是挺有新意的