Nico feels that his long-term relationship with Lina, which is now failing, has not been fulfilling, leading him to view it as a waste.

The argument stems from their feelings of dissatisfaction and unaddressed issues in their relationship, including lack of communication and suspected infidelity.

Yes, during their argument, Nico explicitly admits that he no longer loves Lina.

Lina works night shifts as part of her job at the cafe, which she mentions has caused her to be out of sync with others, but she has gotten used to it.

After their argument, they have a casual encounter at the cafe where Lina works, leading to a more congenial interaction that includes sharing breakfast.

Nico is a biologist and is also interested in scuba diving, which he does professionally.

Lina shows reluctance and insists that she will not dive, despite Nico preparing her with a new wet suit and conducting a health check.

Nico dislikes waking up in the dark and prefers to be active in the morning, whereas Lina rushes to sleep before the sun rises due to her night shift schedule.

Lina plans to make money and then study nursing, although she is uncertain about her admission to the nursing program.

Nico initially started studying economics but quit because he felt it was not the right fit for him.

Yes, they discuss their backgrounds, including where they grew up and their early interests, which helps them connect on a personal level.

Lina is afraid of the potential dangers of scuba diving, such as getting trapped underwater and the eerie silence.

The dolphin cups are popular and frequently stolen by customers, symbolizing a lighter aspect of Lina's job at the cafe.

The episode ends with Lina reflecting sadly on their relationship, wishing she had never met Nico, indicating unresolved feelings and regret.

While they share a more positive interaction towards the end, Lina's final remark suggests deep-seated issues that might not be easily resolved.