SUNQパス 南部九州3日券 · SUNQ Pass Committee (46 bus and ship operators of Kyushu and Shimonoseki)
¥8,500 3-day, adult (digital ticket in my route) · ¥10,000 3-day, adult (paper ticket)¥2,833/day
Digital ticket: any 3 days within 5 days, counted from the first day you tap Use. Paper ticket: 3 consecutive days. A day runs from 3:00 to 26:59; the boarding time counts.
SUNQパス 北部九州（＋下関）3日券 · SUNQ Pass Committee (46 bus and ship operators of Kyushu and Shimonoseki)
¥10,000 3-day, adult (digital ticket in my route) · ¥12,000 3-day, adult (paper ticket)¥3,333/day
Digital ticket: any 3 days within 5 days, counted from the first day you tap Use. Paper ticket: 3 consecutive days. A day runs from 3:00 to 26:59; the boarding time counts.
SUNQパス 全九州（＋下関）3日券・4日券 · SUNQ Pass Committee (46 bus and ship operators of Kyushu and Shimonoseki)
¥12,000 3-day, adult (digital ticket in my route) · ¥15,000 4-day, adult (digital ticket in my route) · ¥14,000 3-day, adult (paper ticket) · +1 more¥4,000/day
Digital ticket: any 3 days within 5 days (3-day pass) or any 4 days within 7 days (4-day pass), counted from the first day you tap Use. Paper ticket: 3 or 4 consecutive days. A day runs from 3:00 to 26:59; the boarding time counts.
Not checked for this operator yet. Many Japanese local buses work like this, but check with the driver: board by the rear or middle door and take a numbered ticket (整理券) if there is one; pay when you get off, at the fare box next to the driver, with the fare shown under your number on the fare display (運賃表). Demand-responsive services (デマンド, 予約制) need a booking first.
General guidance, not a fact about this operator. Signs and phrases.