I got pulled into 'Overflow' because of how personal the cast feels — it's small, intimate, and every interaction lands. The core of the story orbits three central figures: the protagonist, who starts off as an ordinary young man struggling with unexpected emotional upheaval; the primary female lead, who is charismatic and complicated, shifting between warm vulnerability and sharp boundaries; and a third pivotal person who functions as a catalyst—someone with a more aggressive or mysterious energy that forces everyone else to confront their feelings. Those three drive most of the plot, with the protagonist caught between his own confusion and the two different types of affection being thrown his way.
Surrounding them is a supporting crew that gives texture: close friends who offer comic relief and blunt advice, an older figure or mentor who occasionally tempers decisions, and a few minor romantic rivals that create friction. The series leans on these secondary characters to show how the central relationships behave under pressure, so even small scenes with a roommate or coworker can reveal a lot about the leads.
What I love is the way the manga uses the trio to explore consent, communication, and personal growth. It isn't just about who ends up with whom, but about how each person learns to articulate desire and respect boundaries. The emotional stakes feel earned, and that kept me turning pages long after the first dramatic incident — it left me thinking about how messy real relationships can be.