Sakura Blossom is a new item in the Genshin Impact that can be found throughout Inazuma, especially on Narukami Island. This material looks like a pink-purple energy ball with swirling petals floating in the air (in the screenshot below).
To get the cherry blossom, you need to use an electrical attack on them, and then just collect them. Sakura is used to enhance characters - for example, Ayaki.
Sakura color map
Basically, cherry blossom is located on Narukami Island. After collecting, the color will reappear in the same places after 2 days.