Fukumi Suzuki starts her first day at work and meets her tall senior coworker Harumi Takeda, who will become her 'annoying senpai'.
Throughout the initial weeks, Suzuki discovers that although Takeda is annoying in his antics, he has a kind and supportive side.
The office holds its first company picnic since Suzuki joined, providing an opportunity for better bonding among coworkers, especially between Suzuki and Takeda.
During an after-work drinking party, Suzuki becomes aware that she has feelings beyond friendship for Takeda.
Takeda admits to Suzuki that he also has feelings for her, complicating their workplace relationship.
Following Takeda's confession, the two start a secret romantic relationship while continuing to work together.
Their coworkers find out about Suzuki and Takeda's relationship, leading to various reactions and adjustments at work.
They face professional challenges but rely on each other's support to overcome issues within the company.
