In April 2010, Oda married his longtime girlfriend, Mayu,[4] and their son, Shintaro, was born on October 1, 2010.

He won the silver medal in Slovakia behind Russian Alexander Shubin, who would go on to win the Junior Grand Prix Final that season.

In the 2004–2005 season, Oda again competed on the 2004–2005 Junior Grand Prix circuit and won the bronze medal in Ukraine behind compatriot Yasuharu Nanri and American Dennis Phan, both of whom would go on to medal at the Junior Grand Prix Final.

Oda was proclaimed the winner of the Japan Championships ahead of Takahashi, until a glitch in the computer software was discovered and he fell to second place; he had done too many combinations.

The following season, Oda placed 1st at 2006 Skate America over American Evan Lysacek, and he finished 2nd at the 2006 NHK Trophy to compatriot Daisuke Takahashi.

On July 26, 2007, Oda was arrested by the Osaka prefectural police for driving his moped[12] under the influence of alcohol.

[15] Due to this incident, Oda was promptly removed from the cast of an upcoming ice show in Japan.

[15] On August 2, 2007, the Japan Skating Federation, itself wracked by scandal,[16] announced that it had suspended Oda from national competition until the end of October and from international competition and exhibitions until the end of December,[17][18] effectively withdrawing him from his two Grand Prix assignments (Skate Canada and Trophée Eric Bompard), while allowing him to compete at Nationals and try to earn a spot to the 2008 World Championships.

[19] After sitting out the 2007–2008 Grand Prix season, Oda announced his withdrawal from the Japan Championships on December 24, 2007, citing mental stress.

[21] Oda was assigned to the 2009 Trophée Eric Bompard and to the 2009 Cup of China in the 2009-2010 Grand Prix season, winning both.

[11] He was the top qualifier for the Grand Prix Final, where he claimed the silver medal behind Evan Lysacek.

In the free skate, he experienced a fall resulting from a broken lace, and was given three minutes to fix his boot with a two-point penalty.

[22] Upon resuming the long program, Oda landed a final double Axel and scored 153.69 in that segment of the event, ultimately placing 7th overall in men's singles.

However, he had a short program in which he performed only single jumps and thus failed to qualify for the free skating portion of the event.

He was named first alternate to the Grand Prix Final, and was called up when his fellow countryman and the defending champion, Daisuke Takahashi, pulled out due to a leg injury.

[32] A recurring cast member at the annual touring ice show Fantasy on Ice, Oda performed a live music version of his short program "Storm" from the 2010–11 season in collaboration with the Yoshida Brothers during the 2016 version.

[33]: 63 Oda would announce a desire to retire from official competitions in October 2017, considering the 2017 Japan Open as the final one.

[35] In April 2017, Oda accepted a job as head coach at the Kansai University Skating Club in Takatsuki, Osaka.

However, Oda would step down from this position in September 2019 and in November 2019, he would hold a press conference claiming that his reason for resignation was due to fellow Kansai University coach, Mie Hamada, morally harassing him.

Shortly after that conference, Oda would file a lawsuit against Hamada, seeking 11 million yen in damages for mental distress.

Detailing his reasons for this decision, Oda explained, "After the coronavirus outbreak, my physical strength and muscle power dropped drastically, and it was difficult to get it back.

"[39] Oda made his official return in January 2023 at the 2023 Japan Winter Sports Festival, where finished ninth.

[42] Receiving standing ovations for both his short and free program performances, Oda would ultimately come in fourth place, the same placement he achieved at the previous national championships he competed at eleven years prior.