Hybe's first-quarter revenue hit an all-time high on the back of BTS's full-group return and rising momentum from newer acts, but the K-pop powerhouse swung to an operating loss after booking a one-time charge tied to employee bonuses funded by its chairman. Revenue for the January-March period reached 698.3 billion won, up 40 percent from 500.6 billion won a year earlier, the company said. Adjusted operating profit — which strips out a one-time, non-cash accounting charge — came in at 58.5 bill