'99.7% of revenue was fictitious transactions' — KDDI investigation finds fraud at Biglobe and G-Plan

A special investigation committee found that about 99.7% of Biglobe and G-Plan's advertising-agency revenue was fictitious circular transactions.

The fictitious trades ran from August 2018 to December 2025 and involved 21 client accounts out of 218.

KDDI will restate consolidated results through Q3 FY2026, cutting reported sales by ¥246.1 billion and profits by ¥150.8 billion (operating) and ¥129.0 billion (net).

Biglobe and G-Plan dismissed responsible staff and will exit the advertising-agency business, while KDDI's management announced pay returns and several resignations.