Yoshitsugu Nagano is the youngest person to be certified in the highest rank of the Ueda Sōko Tradition of Warrior Tea school, which has been practiced in Hiroshima for 400 years, and serves as a regular instructor for the school. He has also organized and represented Chanoyu Week NYC since 2022.

In 2019, he relocated to New York City, where he promotes the spirituality and aesthetics of chanoyu through hosting tea rituals both for public audience and by special arrangement, presenting workshops, and teaching his students. He established his own unique style of tea by incorporating new means of expression into a tradition deeply rooted in Zen.