Yamaoka Riku
Riku Yamaokaprofile02
Inashiro High School - No. 3
First Baseman
Bats: Right Throws: Right
Kanji 山岡 陸
Gender Male
Age 16 (debut)

17 [1]

Date of birth 22 August
Place of birth Tokyo
Bloodtype B
Height 180 cm (5' 10.5")
Weight 85 kg (187 lbs)
Education 2nd Year High School (debut)

3rd Year High School [2][3]

Style Power Hitter
First Appearance
Anime S1 - Episode 45
Voice Actor Shō Kawaguchi

Yamaoka Riku is a student of Inashiro Industrial and fourth batter of Inashiro's baseball team.


Yamaoka is a quiet person who hardly says anything. He is calm during games and enjoys drinking large amounts of water.

Act IEdit

West Tokyo TournamentEdit

Yamaoka is first seen drinking a bottle of water while his teammates chat about Narumiya before Inashiro's semifinals match against Sakurazawa High begin. At game time, Yamaoka contributes runs for his team in the fourth inning. The combined efforts of the team, eventually led to Inashiro's utter victory.[4]

After the match, he with his batchmates Carlos, Shirakawa, Yabe and Narumiya, runs into Miyuki in the stadium. His teammates talk briefly with the catcher before taking their leave.[5]


In Inashiro's match against Seidou High School, he gets struck out with Furuya's fastball early in the match. But after a pitcher change, Furuya is replaced by Tanba, Yamaoka scores a solo-homerun right off the bat, affecting Tanba's pitching for a short while.[6]

In the latter innings, he hits Sawamura's crossfire and gets on base but gets out when attempting for second with a risky play from Sawamura.[7]

In the bottom of the ninth, when Inashiro scores their fifth run of the game, Yamaoka celebrates with his teammates.

Act IIEdit

In the third round of the Spring Tournament, Inashiro Industrial face-off against Yakushi High. At the top of the sixth, Yamaoka hits a RBI giving his team a second run. And in the eighth, hits another RBI for Inashiro's third run.[8]

Relationship with other CharactersEdit

Narumiya MeiEdit

Yamaoka entered Inashiro Industrial after being invited by Narumiya. He thinks highly of Mei's skills and trusts him greatly. Like the rest of his teammates, he tolerates Mei's cheeky character.



Batting:Yamaoka is a power hitter and is capable of hitting home-runs. He was Inashiro's 6th hole batter, and currently bats 4th, after the third years retired (Harada's generation).

Player StatisticsEdit

Physical Strength
Mental Strength


  • He likes Records of Three Kingdoms by Yokoyama Mitsuteru, Sangokushi V (KOEI) [9]
  • Has respect for: Lu Xun of Three Kingdoms [9]
  • He played for Takahira Senior League together with Yabe Kouji. [9]

Name EtymologyEdit

  • Yamaoka (山岡) - Mountain Hill
  • Riku (陸) - Land



  1. Act I - Chapter 203
  2. Act I - Chapter 412
  3. Act II - Chapter 1
  4. S1 - Episode 46
  5. S1 - Episode 47
  6. S1 - Episode 54
  7. S1 - Episode 59
  8. Act II - Chapter 20
  9. 9.0 9.1 9.2 Official Guide Book - Omote


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