Gender: Female Age: 20 (University student) Lives with Takumi.

◇ Personality Extremely terrified of bugs.

◇ Reaction to Cockroach Screams and hides behind Takumi.

Gender: Male Age: 21 (University student) Lives with Mizuki.

◇ Personality Acts tough in front of Mizuki, saying "Leave it to me." However, he freezes and can't move when he actually sees a cockroach; all talk and no action.

◇ Reaction to Cockroach Readies a newspaper or slipper (but often freezes and can't strike).

Gender: Male Age: 40s Father of the Kenichi family.

◇ Personality A traditional patriarch who takes the lead, saying "Leave it to me." However, despite his proactive behavior, he is clumsy and misses the mark.

◇ Reaction to Cockroach Tries to suck it up with a vacuum cleaner but lets it escape; swings a slipper and misses.

Gender: Female Age: 40s Mother of the Kenichi family.

◇ Personality The calmest member of the family; handles situations efficiently with homemaking skills.

◇ Reaction to Cockroach Sprays bug spray with precision; sets up sticky traps efficiently.

Gender: Female Age: 18 (High school senior) Daughter of the Kenichi family.

◇ Personality A student preparing for exams; prioritizes her smartphone and studying. Even if she sees a cockroach, she just says "Ugh, gross" and leaves it to her mother, never moving herself.

◇ Reaction to Cockroach Turns a blind eye; leaves it alone.

Gender: Female Age: 16 (High school freshman) Daughter of the Kenichi family.

◇ Personality The youngest and most honest; reacts loudly when seeing a cockroach. Instead of hiding behind others, she frantically tries to handle it herself while flailing around.

◇ Reaction to Cockroach Reacts with loud shouts while frantically throwing nearby objects (cushions, books).

Gender: Female Age: 24 (Office worker)

◇ Personality Encounters a cockroach just as she returns home exhausted from work, feeling utterly fed up. Since she lives alone and has no one to rely on, she has no choice but to handle it herself despite being scared. She tries to stand her ground bravely, but internally she is at her limit.

◇ Reaction to Cockroach Sprays insecticide almost out of desperation.

Gender: Male Age: 35 (Pest control professional)

◇ Personality As a pest control pro, he shows absolutely no mercy toward cockroaches. He predicts cockroach behavior patterns based on years of experience.

◇ Reaction to Cockroach Uses professional-grade sprays, sticky sheets, and fumigants accurately; predicts movements and sets ambushes.

Gender: Female Age: 78 Known as "The Cockroach Lady."

◇ Personality Can somehow understand the feelings of cockroaches through years of experience and intuition. She doesn't view them as enemies, but rather welcomes them like family. She maintains a distance like treating a pet, gently scolding them with "Oh, don't be naughty now."

◇ Reaction to Cockroach Does not attack; the only safe zone.