Wataru Onaga (Japanese: 尾長 (おなが) (わたる) Onaga Wataru) is currently a college senior and will be starting work as an electrician in Saitama after graduation. He is also a middle blocker on the Tamaden Elephants, a Division 2 volleyball team in Japan's V. League.

For majority of the series, he is a first year middle blocker at Fukurōdani Academy.


Wataru has very short, dark brown hair and a long face. He is one of the tallest first years shown so far, standing at 191cm; this is very tall for someone his age.



He is currently in his 1st year of high school at Fukurodani Academy and is a middle blocker on the Boys' Volleyball Team there.


Tokyo Expedition Arc

Onaga first appears during the summer training camps. He is mostly seen in the background or playing on the court during a practice match. During the barbeque, he tries to help Yachi when she accidentally ate a piece of burned meat.

Spring High Preliminary Arc

During the game against Nekoma, Onaga is mostly seen attempting to block the Nekoma spikers.

Tokyo Nationals Arc

Fukurōdani vs Eiwa

Onaga mostly appears in the background during the game. He is shown being surprised when Coach Yamiji is scolding Bokuto for getting depressed when they had talked about this habit of his the previous day.

Fukurōdani Academy vs. Matsuyama Nishi Shōgyō High

Onaga is seen spiking past the Matsuyama blockers but his spike was received.

Fukurōdani vs Mujinazaka High

Onaga plays with his team against Mujinazaka High. He was given the first set of the match when Akaashi decided to use him to make the first attack at the last minute but he was blocked.

Onaga is mostly seen trying to block the opposing spikers and would occasionally try to get a few spikes in himself. Onaga would also highly compliment his upperclassmen on receives and spikes they made during the match.

Final Arc

Onaga's final appearance comes when he is watching the MSBY Black Jackals game on his phone. He currently is playing on the Division 2 team the Tamaden Elephants as a middle blocker[1].


Original Statistics
Game Sense

Jumping Reach: 330 cm



  • Favorite Food: Pudding (rich and creamy type)
  • Current Concern: Some of his classmates call him Omonaga-kun (long face-kun) in genuine error.
  • His star sign is Aries.
  • Nomenclature
    • Wataru (渉) - Study
    • Onaga (尾長) - Tail Length


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