Jasper Liu 劉以豪 as Louis Fu Zi Jie (Ah Jie) 傅子杰 - Age 28
A skilled French chef who has never risen pass an interning position. He has been living alone in France for the pass 10 years due to guilt and a promise he made to his older brother who holds a grudge against him. He suffers from fear of the dark due to his brother locking him in the closet when he was younger. Not intending to stay in Taiwan long his mother pleads with him to take up an interning position at one of his father's restaurant for 1 month, he agrees but his identity as the boss's son must be concealed and he has to move out on his own. On his first day at work he is surprised to find his childhood friend Kai Qi has grown up to be a cold, stern, fierce person. Curious to find out why she turned out this way he becomes extra nice to her even though she pushes him away. While getting to know her and becoming closer to her, he realizes he has fallen in love with Kai Qi and becomes jealous when her college friend Cheng Hao Wei comes back into her life. Kai Qi and him become a couple but due to her father's consequences they break up, not wanting to give up on his happiness he works hard to win Kai Qi back. He agrees to Hao Wei's bet on a cooking competition with Kai Qi in hopes that she will put the burden her father has given her aside and reunite with him. In the end even with Hao Wei finally confessing his feelings to Kai Qi, it is still Ah Jie that Kai Qi chooses to be with and loves.
Lene Lai 賴琳恩 as Cheng Le Xuan 程樂瑄 - Age 28
Du Kai Qi's rival and fellow chef at "Figaro Cuisine". Also Cheng Hao Wei's younger sister. She becomes the new sous chef when Ah Jie chooses her dish over Kai Qi's. Due to everyone calling her a "flower vase" (someone with looks but no talent) she is always looking to prove her worth. Though not a mean or bad person, she shows her bitter side when the executive chef acknowledges that Kai Qi is a better chef than her and that she only won the sous chef test because he had sabotaged Kai Qi's dish. Feeling inferior to Kai Qi she starts to give her a hard time at work by singling her out. She develops feelings for Ah Jie because of his kindness but he lets her know time and time again that it is Kai Qi that he loves. When she finds out Kai Qi was the girl that broke her brother's heart in college her hatred for Kai Qi grows. After being rejected numerous times by Ah Jie she later realizes that Ji Yong Qian the executive chef is the one that she truly loves. With help from the entire restaurant staff, she and Yong Qian become a couple and later get engage.
Jolin Chien 簡宏霖 as Cheng Hao Wei 程浩威 - Age 30
Cheng Le Xuan's older brother. Du Kai Qi's college buddy who shares an interest in manga with her. He is a huge "One Piece" fan who had planned to confess his feelings to Kai Qi when they were in college. Due to a misunderstanding caused by Kai Qi's father he mistook her for conning him and shows hatred for her even though he still loves her very much. Though interested in astronomy, he eventually becomes a food critic hoping to still have a connection to Kai Qi when they break off their friendship. When he and Kai Qi reconcile their friendship, he hopes their relationship will move beyond being just friends, but she comes clean that she has feelings for Ah Jie and only want to be friends, which he abides by. Never really confessing his feelings to Kai Qi he relates to Schrödinger's cat theory as hope that there might be a chance for the both of them to be together if she does not give him a reject answer even though he knows that her heart belongs to Ah Jie. When he finally confesses his feelings to Kai Qi she rejects him. Finally getting an answer from Kai Qi he gives up his job as a food critic and pursues his real interest in astronomy.