no, jaekyung can't lose, if he loses, dan's punishment will be worse, jaekyung has to win, dan has to get kidnapped maybe, and potato should mention how dan did test out the spray so that jaekyung realizes the switch happened.
how many times have i reread this? i dont keep count anymore but i still cry at this ending, its just so good and sentimental. One of the best endings I have ever seen in all the webtoons I have read