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'Jiyoon', who has been living a boring life without anything special, meets 'Hyeonsu', a man who claims to be his mother's boyfriend, coming to confront the reason for a break-up text. Jiyoon is exactly like his mother in every way, always sharing the same tastes as her from the very beginning. Seeing Hyeonsu crying in front of him, he thinks he wants to bully him a little more...
It was a summer when even breathing was hard due to the heat. The air conditioner in An Kyungsoos room was long broken. As a replacement, his landlord sent him a humanoid air conditioner that is all the rage overseas, taking form in a handsome male model. As soon as it is turned on, it became so cool that he cuddled it, but he can help feeling a bit weird. As he was cuddling this temporary replacement of his AC, he pressed a button located somewhere and it opened its eyes. Turns out that not only did his humanoid have a handsome face, he also has a kind personality and a gentle voice... This totally perfect ACs over friendliness gradually included skinship, as well as relieving his sex drive that has been long stifled by the heat..