This could potentially be:

Sena Sakura is another gifted Japanese idol who has made a lasting impact in the entertainment industry. As a member of the idol group, Sakura Gakuin, Sakura has showcased her exceptional vocal abilities and dynamic stage presence. With her bright personality and infectious enthusiasm, she has won over the hearts of fans and established herself as a rising star in Japan.

The festival was just a week away, and the girls were determined to make their stall the best one at the event. They decided to sell a variety of Japanese street foods, such as takoyaki and okonomiyaki, as well as some unique desserts they had come up with. Uehara designed a colorful poster to advertise their stall, which read "Sakura-San's Festival Delights."

: The names might belong to virtual YouTubers or content creators who use such personas.

: A very well-known Japanese term that means "cherry blossom." It's a common name for girls in Japan and also a symbol of the fleeting nature of life.

: Another Japanese name, possibly a given name.