[4] After graduating, he spent three years working for a warehouse company and was also a part-time football coach for elementary school students.
[5] Deciding to pursue his dream of becoming a professional footballer but unable to find opportunities in Japan, Omura headed to Australia.
He joined NSW Super League club Fraser Park FC and played in almost every match of the 2011 season.
[6] In the 2015 UFL Cup, wherein Kaya won the title, Omura received the Golden Ball award as the best player of the tournament.
[13] In 2018, Kaya won the inaugural Copa Paulino Alcantara, the new domestic cup competition of the Philippines.
In their last group match, a 1–0 loss to Vietnamese champions Viettel, Omura was sent off for a foul on Nguyễn Trọng Hoàng.