Sugitani Honpo Co., Ltd. (Head Office: Isahaya City, Nagasaki Prefecture, Representative Director: Tatsuaki Sugitani) will renew its special castella, luxuriously made with the brand eggs "Uchi no Tamago" from JR Kyushu Farm Co., Ltd. The product, previously known as "Tamago no Kokoro 0.5-go," will be renamed "Castella of Uchi no Tamago 0.3-go," featuring a new package design, and will be released on July 1, 2026 (Wed.). This exquisite item, born from the fusion of Sugitani Honpo's castella craftsmanship cultivated since its founding and the rich flavor of "Uchi no Tamago," can now be enjoyed more easily. ■ Background of Renewal: Clearer, More Accessible While previously loved as "Tamago no Kokoro," we have responded to customer feedback requesting clearer communication about the use of JR Kyushu Farm's "Uchi no Tamago," and to the need for a size that can be consumed more readily. This renewal introduces a more accessible, compact "5-slice package (0.3-go size)," making it suitable for a wider range of occasions, from daily snacks to gifts. ■ Product Commitment and Features 1: Ingredients "Uchi no Tamago" directly from Uchino-juku Poultry Farm in Iizuka City, Fukuoka Prefecture. The main ingredient is the brand egg "Uchi no Tamago," raised in a rich natural environment. The egg's deep richness and natural sweetness enhance the castella's flavor. 2: Craftsmanship "Traditional Flavor" Brought Out by Long-Established Sugitani Honpo. Through the skilled techniques of experienced artisans who have been baking Nagasaki castella for many years, we have achieved a formulation and baking process that maximizes the flavor of "Uchi no Tamago." While cherishing our existing fans, we have carried forward the traditional deliciousness (moist texture, rich flavor). 3: Design Featuring the icon character "Tama-chan" in the center, the package has been refreshed to be friendly and eye-catching, with the familiar logo and image character "Tama-chan" prominently displayed to make it