Yurindo Co., Ltd. celebrated the 6th anniversary of its official YouTube channel, "Yurindo Shika Shiranai Sekai" (The World Only Yurindo Knows), by holding the "Yuseka 6th Anniversary Event" on June 27 (Sat.) and 28 (Sun.), 2026. The event was organized to express gratitude to viewers through in-store events, online streaming, merchandise, exhibitions, and workshops, and to allow them to experience the products and personalities featured on YouTube at physical store locations. On June 27 (Sat.), the "R.B. Buccolo BIRTHDAY PARTY in Ebisu" was held at Yurindo Atre Ebisu store. On June 28 (Sun.), the main event, "Gather! Almost First Graders Buccolo Cheki Meet," was held at Yurindo Isezaki Chomin Main Store's 6th-floor YouTube Studio, accompanied by a YouTube live stream. June 27 (Sat.) Birthday Event Held at Atre Ebisu Store Amidst Approaching Typhoon Masayo-san and Yu-hashi's Bookstore Lab The "R.B. Buccolo BIRTHDAY PARTY in Ebisu" was held to celebrate the birthday of the channel's MC, R.B. Buccolo. Despite concerns about the impact of the approaching typhoon on transportation and customer traffic, several participatory programs were held inside the store. These included a "Ukammuri Clip" decoration workshop led by Mizuki Abe from Sun-Star Stationery Co., Ltd., a "Sanseido Kokugo Jisho Karuta" (Sanseido Japanese Dictionary Karuta) event with Koichi Yamamoto from Sanseido Dictionary Publishing Department, a "Bookstore Lab" offering a taste of bookstore work, and accessory making using LaQ. Additionally, a "Yuseka 6th Anniversary Book Fair" was held, combining recommended books from viewers with selections curated by Kentaro Shiba (Store Sales Division), and a "Yuseka Shop in Ebisu" offered R.B. Buccolo merchandise. The event allowed attendees to experience the personalities and programs they enjoyed on YouTube in a real store setting, even amidst the inclement weather. June 28 (Sun.) Cheki Event and 10-Hour Live Stream Held at Yurindo Isezaki Chomin Main Store Scene