In the start of Bad-Memory Eraser’s fifth episode, Gun suspects Ju-yeon of taking his luggage. She explains that the item belongs to her and she stopped by to look for it to avoid inconveniencing him. He is thrilled that she shows interest in him and they locate his ID card together.
He feels pain from the blisters on his hand, so she applies a bandaid to them. As his doctor, she will always be there to support him, and he is grateful for her care. He also expresses his support for her and is very excited about their interaction.
At the same time, Shin is convinced that Sae-yan has feelings for him. Nevertheless, she has been attempting to contact him because she misplaced her bracelet inside his vehicle which is very important to her but He believes it’s just an excuse and tries to give her money for a new money but she reminds him she’s just as rich and gets irritated with him. Upon departing, he senses a presence trailing behind him.
Guk-bong arrives and Gun discloses his intention to have Chairman Won as an investor. Won is a major investor in the fields of biotechnology and sports. He has not been seen by anyone and his representative is extremely selective.
When it comes to Ju-yeon, she cannot get rid of the guilt she feels knowing she will hurt Gun after noticing the way he looks at her. In the elevator, He attempts to offer her a flower in Tae-oh’s presence, but it shatters and she is not impressed.
Upon arriving at the hospital, Sae-yan overhears Nurse song and another doctor discussing planning a dinner party that doesn’t include Ju-yeon due to her aloofness. Just then, Ju yeon appears and Sae yan forcefully passes through them as she hugs Ju yeon and then informs Ju-yeon about their own dinner arrangements. The other two look guilty and leave. While grocery shopping, Ju-yeon believes that work and friendship should not be mixed. Sae-yan values brief interactions and expressing feelings. Ju-yeon adds that there are people who shouldn’t be given the time of day and Sae Yan assumes that she’s referring to someone who is on her mind
At the hospital, Shin and Gun look for Ju-yeon but cannot find her. Shin chooses to rest in Gun’s room and Gun gazes at him. Gun remembers that when they were children, Shin would hold onto him and nap beside him. Shin appears torn as he thought Gun did not have any positive memories of him. Gun inquires about their adult relationship and Shin responds that it remains unchanged with Gun still playing pranks on him while he continues to rely on Gun. Gun once more tricks Shin by appearing to have something significant to say, but in reality, he just wants Shin to get up and turn off the lights.
At the same time, Sae-yan gives Ju-yeon identical couple tees and instructs her to pass them to her boyfriend. Ju-yeon pretends to be irritated but intends to hand it over to Tae-oh.
During the court session, Shin is very tired and as Mrs. Lee massages his feet, she sees the bloody blisters. She is angry at Hong, who is attempting to justify that it was the cost the sponsor had to cover for Shin’s coaching. She angrily strides to the sponsor’s office and rips up the contract.
Next is Shi-on, whose commercial gets canceled because of news about her injury and physical therapy. Gun instructs her to have faith in him, and she complies. Nevertheless, her mother requires him to make a down payment within 10 days or else their agreement will be canceled.
Gun must be released for the upcoming trial test, with Ju-yeon accompanying him in his capacity as his medical guardian. However, she warns him to desist from flirting with her. They visit a racetrack where Gun becomes serious, informing her that although he likes her, he wouldn’t tolerate her disrupting his work. He asks about her relationship with Tae-oh and she asserts that she has been in a relationship with Tae-oh since her trip to the UK and he is her first romantic partner. This hurts Gun but he focuses on his presence at the racetrack where he has come to seek out potential investors for his business.
Ju yeon gets awkward when Tae Oh holds her hand and leads her to the track. He encounters a wealthy investor and gives him his proposal but the man looks uninterested. The man is on the verge of ousting him with his guards until Gun correctly foretells that horse #5, which the investor supports, will perform poorly while #3 will emerge victorious. He introduces Ju-yeon as the team doctor surprising her but she affirms his statements while observing horse #5’s nervous behavior. They are thrown out but Gun is certain he will be called back. Horse 3 wins and the investor gets interested in his deal but Gun acts aloof and doesn’t meet with him, instead he suggests to his guard that he should set up another meeting.
Likewise, Ju-yeon is amazed and questions why Gun doesn’t simply wager his own money on the horse to secure the funding. But Gun explains that being an athlete, he is not willing to misuse sports and Ju-yeon is even more impressed by his moral principles.
On their way back home, Ju yeon gets tensed by Gun’s action when he is helping her put her seat belt
Afterwards, she sends a text to Tae-oh but he chooses to ignore it. Upon arrival at the hospital, Gun is ready to invite her for dinner but is interrupted by Tae-oh, who instructs her to come to the meeting room. She quickly goes, wearing the corresponding t-shirts. Unaware that it was only a distraction. Tae-oh has being under pressure from his direct supervisor Dr Kim and to gain his approval, Tae-oh conducts his own test on Gun for a neurosurgery thesis.
While following Sae-yan’s suggestion, Ju-yeon adorns the meeting space with balloons and candles while anticipating Tae-oh’s arrival. After the test, Tae-oh goes to see Dr. Yeo. Ju-yeon overhears him soothing Yeo’s anger over having to keep their relationship a secret. Ju-yeon is devastated while learning up the room she had decorated, but fortunately Tae-oh doesn’t enter and exits with Yeo.
A memory from the past depicts Tae-oh informing Ju-yeon that the day she returns from the UK marks the beginning of their relationship. Do you think Ju-yeon was always truthful about being in a relationship with him? After figuring everything out, Gun shows up and advises Ju-yeon to face Tae-oh but she responds angrily to him telling him to stop poking into her business. He leaves in anger.
Ju-yeon leaves and cries as Shin bumps into her. He provides transportation for her and brings her a cup of coffee. He thinks food improves one’s mood, but he’s unable to consume it because of his dietary restrictions. She continues to insist and finds amusement in his face covered in foam. She discovers Sae-yan’s bracelet in his car and returns it to him. That night, Shin smiles to himself while in his bed, obviously besotted by Ju yeon.
At the same time, Gun warns Tae-oh not to interfere with Ju-yeon. He then leaves the hospital and Dr. Kim is very angry as no one knows his whereabouts. Tae-oh accuses Ju-yeon and Kim advises removing her from the research. Han supports Ju-yeon’s research because it is hers, while Kim mentions Tae-oh’s neurosurgery paper and highlights that Ju-yeon’s was related to psychiatry. Kim also discloses that Gun’s outcomes are unclear when he is with Ju-yeon because of his emotions for her, whereas with neurosurgery, the results are unbiased.
The following day, Tae-oh invites Ju-yeon to lunch and although she considers confronting him multiple times, she ultimately decides against it. He arranged the lunch to manipulate her into believing that it was her own idea to switch the focus of the research from psychiatry to neurosurgery for the trial’s advantage. She does not provide a response and feels let down on her way back.
At home, Sae-yan mentions Ju yeon having a boyfriend. Her family playfully teases her, so she shields her nephew’s ears. She then recalls when Gu had also blocked her ears before and understands that Gun likely diverted her attention the night they argued because he had seen Tae Oh with Yeo.
However, for the sake of the study, she chooses to change fields. As she waits in the hospital, she tidies up Tae-oh’s workstation and discovers the experiment he conducted on Gun. She feels regretful for not being able to keep her patient safe. Upon his arrival, he instructs her to act with elegance, further fueling her anger so she places all the garbage back onto his table. She remembers Yeo having Tae-oh’s gold Eiffel Tower necklace and tosses her own Eiffel Tower keychain.
When it comes to Gun, he officially starts his own agency and his family, although chaotic, is very supportive. Shin gives Sae-yan the bracelet which doesn’t break, making her happy. She then has a flashback. During the reunion, she had displayed Gun’s medal on the class’ achievements board.
Angry that Shin broke up with her, she catches sight of him and runs after him to his car. After kissing him and rekindling their relationship, she then shocks him by slapping him and announcing that she is breaking up with him. Content with having the final say, she departs and accidentally lets go of the bracelet. Currently, she is optimistic and makes a wish to find a potential partner, indirectly implying Gun.
When Ju-yeon arrives at Gun’s home in a rain-soaked state. She requests to board and he is perplexed especially as she announces that she is the team physician for his organization.
Now, things are going to take a different turn and I’m liking it. At last Ju yeon has opened her eyes and realized their wrongs. The chemistry between the leads is slowly taking shape. Though, let’s see…