This outlines a consumer-driven marketing strategy exemplified by the successful launch of Pilot's KIRE-NA highlighter pen.

The key insight is that changes in consumer behavior, specifically the rise of social media and sharing "study accounts" among middle and high school students, transformed notebooks from private study tools into publicly shared content. This shift created a previously unmet need for highlighters that could produce smudge-free, perfectly straight lines, addressing concerns about photographic aesthetics. The success of KIRE-NA is attributed to its product design (with features like a "Kitchin Guide" for straight lines) and communication strategy (such as curved trial tables in stores) that directly addressed this desire for beauty and presentation.

The overarching lesson is that deep customer understanding—observing context, action, and resulting psychological needs—is the essential starting point for effective marketing.