Crown Prince Akishino and Princess Kiko attended the 120th anniversary ceremony of the Shuyodan, a social education organization, on the 20th at the National Olympics Memorial Youth Center in Shibuya, Tokyo. During the event, they joined the attendees in a choir performance. The Shuyodan was founded in 1906 by students from what is now Tokyo Gakugei University, with the aim of cultivating youth through volunteer activities, camping, and international exchanges, using the slogan 'Let's plant seeds of happiness together!'.

In his speech, Crown Prince Akishino expressed his happiness that the 'Seed of Happiness' initiative, first announced at the 90th anniversary event he attended with Princess Kiko, has continued to this day. He encouraged all attendees to plant as many seeds of happiness as possible and contribute to creating a more compassionate society. He also engaged with middle school students who reported on the relief efforts following the Noto Peninsula earthquake, where they received donated uniforms from the organization.

This marks the couple's attendance at such an event since the 90th anniversary. Notably, the Emperor and Empress (then Crown Prince and Princess) attended the 110th anniversary, and the former Emperor and Empress attended the 100th anniversary. The presence of the Royal Family adds significance to the event, highlighting their support for youth development and community welfare in Japan.