Description
Onii-san, commonly called the Salaryman, works as a salesman. He first appears in a state of deep depression, with the doujinshi continuity revealing he nearly committed suicide by jumping in front of a train just before meeting Ai-chan. Their chance encounter happens squeezed together on a crowded Monday morning rush hour train. He accidentally drops his business card on her; she chases after him to return it, resulting in her falling breast-first onto him on the station stairs and briefly sending him to the hospital.
This incident sparks a recurring Monday morning routine where he acts as her bodyguard during the train commute, shielding her from the crowds. In return, Ai-chan gives him weekly charms – typically buttons popped off her shirts due to her large bust size – initially to cheer him from his depression. Their relationship evolves beyond Mondays; she invites him to visit Bakery Restaurant Tawawa, her part-time workplace despite her school's prohibition on student employment. There, she occasionally teases him, like intentionally bending over near other male customers to provoke his jealousy.
He displays protective instincts and occasional jealousy regarding Ai-chan's interactions with other males, especially a male classmate. Though largely depicted as a faceless character consistent with most males in the series, his emotional vulnerability comes through in voice performances and narrative context. He lives near recurring characters Teacher and Maegami-chan, who later become his neighbors.
Character development varies across continuities. The original doujinshi and anime show their relationship progressing to implied sexual activity, including scenes where Ai-chan answers the door partially undressed after intimacy. The manga serialization alters this dynamic, emphasizing Ai-chan's embarrassment about physical intimacy and portraying a more emotionally nuanced bond, a shift potentially stemming from external controversies. Key milestones include Ai-chan confiding her ambition to become a nurse after graduation and her bust size progression from I-cup to K-cup (97cm to 103cm), which he observes firsthand.
His interactions extend beyond Ai-chan, featuring workplace dynamics with his boss (Chief Manager) at the company fitness center in dedicated anime episodes. Family connections exist through his niece, Volleyball-chan, who is Ai-chan's best friend and classmate.
This incident sparks a recurring Monday morning routine where he acts as her bodyguard during the train commute, shielding her from the crowds. In return, Ai-chan gives him weekly charms – typically buttons popped off her shirts due to her large bust size – initially to cheer him from his depression. Their relationship evolves beyond Mondays; she invites him to visit Bakery Restaurant Tawawa, her part-time workplace despite her school's prohibition on student employment. There, she occasionally teases him, like intentionally bending over near other male customers to provoke his jealousy.
He displays protective instincts and occasional jealousy regarding Ai-chan's interactions with other males, especially a male classmate. Though largely depicted as a faceless character consistent with most males in the series, his emotional vulnerability comes through in voice performances and narrative context. He lives near recurring characters Teacher and Maegami-chan, who later become his neighbors.
Character development varies across continuities. The original doujinshi and anime show their relationship progressing to implied sexual activity, including scenes where Ai-chan answers the door partially undressed after intimacy. The manga serialization alters this dynamic, emphasizing Ai-chan's embarrassment about physical intimacy and portraying a more emotionally nuanced bond, a shift potentially stemming from external controversies. Key milestones include Ai-chan confiding her ambition to become a nurse after graduation and her bust size progression from I-cup to K-cup (97cm to 103cm), which he observes firsthand.
His interactions extend beyond Ai-chan, featuring workplace dynamics with his boss (Chief Manager) at the company fitness center in dedicated anime episodes. Family connections exist through his niece, Volleyball-chan, who is Ai-chan's best friend and classmate.