[2] Hoshina was born and raised in Shizuoka, Japan to a Filipina mother and Japanese father.

[4] He continued competing in judo while at college and he hopes eventually to become a sumo wrestling teacher.

In 2012 Summer Olympics in London, Hoshina debuted in the Men's +100 kg in judo,[4] representing the Philippines.

[3] On August 3, 2012, in the pool round, Hoshina was drawn against Kim Sung-Min of South Korea who had previously beaten him at the 2011 World Judo Championships and the 2011 Asian Judo Championships.

[5] The game was timed out in 1 minute and 5 seconds ending with Kim scoring 100 to Hoshina's 0.