bonus-time sales offensive; year-end bonus sales push
Refers to the aggressive marketing and sales campaigns by retailers timed to coincide with the winter bonus season in Japan, typically from late November through December.
When the bonus-time sales offensive begins, electronics retailers everywhere get crowded.
In this year's bonus sales push, high-ticket items are selling well.
Compound of ボーナス (bonus) and 商戦 (sales competition/battle). The term emerged as Japanese retailers began targeting winter bonus payouts for major sales campaigns.