SPI is Japan’s first independent, strategic media planning company. SPI provides marketers with the most qualified and objective advice to increase the efficiency and effectiveness of investments in marketing communications. A scientific, accountable approach to marketing and media planning. Unlike advertising agencies, we no not buy media. We focus on what is the best use of marketing funds to achieve the clients business goals then manage the buying through the appointed media buying agency (or we’ll help select one). Our clients get the best, strategic thinking, combined with powerful media buying. We work on an ad hoc or retainer fee base.