WHY US?

Lim Yeonsu and Kang Taehyun used to be friends but have now been each other's biggest enemies ever since the incident they had in freshman year, since then both always try to avoid each other 24/7,but what happens when they're put in charge for the upcoming university trip?

Will they stop their burning hate and change into something else or will they continue to hate each other until they die?
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