Diamond Sponsor
- Le Grand Co., Ltd.
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Le Grand Co., Ltd. is a strategic marketing agency founded by launch members of Overture (now Yahoo!), the pioneer of search advertising.
In 2026, we launched Railcast Ads™, a new advertising service co-developed with JR West that combines railway data with weather data, delivering ad experiences tailored to the "here and now" of people on the move — in stations and along railway lines. Our data-driven solutions also include weathermarketing.net® (patented), a weather-triggered ad delivery tool, and TNQL, a weather-based outfit recommendation service.