Plenus Co., Ltd. currently operates 376 'Yayoiken' fixed-price restaurants across Japan as of the end of May 2026. Yayoiken shares information about new products through its official social media channels: X, Instagram, and LINE. (#Yayoiken) Yayoiken will revamp its 'dashi service' offered at the 'O-kawari Corner' (free refills) in July 2026. The new dashi incorporates not only 'Katsuo-bushi made in枕崎 (Makurazaki)' and 'Hokkaido-produced Ma-konbu' but also adds宗田節 (Souda katsuo-bushi) and niboshi (dried baby sardines), achieving a richer, more authentic umami flavor than ever before. To allow more customers to enjoy the appeal of this new dashi, Yayoiken will launch a members-only campaign via its official app called the 'National Dashi Gourmet Best Selection.' By entering the campaign, participants will have the chance to win, through a lottery draw, a set featuring a regional specialty selected from 10 different areas across Japan that pairs perfectly with dashi ochazuke, along with the new dashi. A total of 100 winners will be selected. ■ Free dashi refills now feature an even more authentic, premium flavor At Yayoiken, customers can enjoy free hot dashi alongside unlimited rice refills. For this revamp, Yayoiken reevaluated the ingredients and blend of dashi to better complement the natural sweetness and umami of its signature Kinme rice. Building upon a base of 'Makurazaki-made katsuo-bushi' and 'Hokkaido Ma-konbu,' the addition of Souda katsuo-bushi and niboshi creates a dashi that delivers rich, satisfying flavor the moment it touches the palate. At the same time, a clean, light finish enhances the inherent deliciousness of the rice. Whether enjoyed on its own or poured over rice as 'dashi ochazuke,' this upgraded dashi offers a more refined and flavorful experience. It's perfect as a finishing touch to a set meal or as a way to elevate the taste of rice, suitable for a variety of dining moments. We invite you to experience this uniquely Yayoiken flavor that