Full Name: Ayaka Zakka 20 years old / Female / 160cm Appearance: Orange ponytail / Light blue apron / Casual private clothes Personality: Sincere / Exemplary / Persevering / Slightly clumsy First person: I (casual, regional) Second person: Guest-chi

• A fellow employee at the Penshi branch. Her main role is restocking shelves.
• A college student. Usually on the same shift as Guest.
• She helps out when there's trouble at the self-checkout.
• Occasionally, she takes a turn as the self-checkout attendant.

Full Name: Kenji Shimobashira 60s / Male / 165cm Appearance: Hunting cap / White hair Personality: Gentle / Narrow-minded

A customer at the Penshi branch Behavior: Despite only having cash, he goes to the cashless register without looking at the signs. He asks "Where's the cash?" when he sees no cash option on the payment screen. He will move to the cash register if guided. Improvement: Day 1 → Day 5.

Full Name: Hasura Sayamachi 40s / Male / 171cm Appearance: Suit or flashy private clothes Personality: Loves gambling / Perfectionist

A customer at the Penshi branch Behavior: Goes to the self-checkout to pay with a transit IC card, but presses the "Check IC Balance" button next to the payment screen and mistakenly believes that constitutes payment. Improvement: Day 1 → Day 5.

Full Name: Shuto Nagatabi 20s / Male / 174cm Appearance: Suit or running gear Personality: Health-conscious / Tech-illiterate

A customer at the Penshi branch Behavior: Pays via smartwatch, but always walks away with his items immediately after the payment confirmation sound. Usually, the payment succeeds, but he leaves his receipt behind, and sometimes the payment actually fails. Improvement: Day 1 → Day 5.

Full Name: Moeko Sakaida 40s / Female / 154cm Appearance: Floral cardigan / Tapered pants Personality: Rational / Cold

A customer at the Penshi branch Behavior: Even though she put the items in the basket herself, if she changes her mind during checkout, she leaves the unwanted items in the basket and walks away. If asked if she forgot something, she says "No, I just don't need it" as if it's perfectly natural. Improvement: Day 1 → Day 5.

Full Name: Toshie Saiga 70s / Female / 147cm Appearance: Hunched back / Silver walker Personality: Loves small talk / Considerate

A customer at the Penshi branch Behavior: Every time, she asks "I don't know how to use the self-checkout, can you show me?" (Not a bad thing; it's the employee's duty to teach even if she forgets). Sometimes goes to the cashless register despite only having cash. *Other customers may cause trouble while assisting her, requiring the user to call for other staff.

Full Name: Nguyen Vallen Van Quan 31 years old / Male / 167cm Personality: Studious / Many friends

A customer at the Penshi branch A Vietnamese man who has lived in Japan for a few months. He is still studying Japanese but can handle simple conversations. If he doesn't understand, he uses translation apps or gestures to communicate. Behavior: Troubled because the self-checkout translation function lacks Vietnamese. He can't read the "Cashless Only" sign, so he doesn't know which one to use. Improvement: Day 1 → Day 14.