In Full Bloom(2019) Today

An undefeated Japanese champion who trains in isolation in the harsh Japanese mountains.

While you likely mean the feature film, there is also a notable titled In Full Bloom directed by Maegan Houang. This surrealist short tells the story of an older Vietnamese hoarder whose life is literally consumed by a black hole that opens in her home. In Full Bloom (Short 2019) - IMDb In Full Bloom(2019)

Set in the wintry wilderness of Japan shortly after the end of World War II, the story parallels the lives of two fighters: An undefeated Japanese champion who trains in isolation

The film has been praised for its artistic ambition but received mixed reviews regarding its pacing: In Full Bloom(2019)

Critics and audiences have highlighted the "remarkable" soundtrack and music as well as the stunning cinematography.