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Momotaro Mikoshiba
Momo Dive to the Future.jpg
Kanji 御子柴 百太郎
Rōmaji Mikoshiba Momotarou
Also known as Japan's Legendary Sea Otter (self-designated)[1]

Momo (by Rin)
Momo-kun (by Nitori)

Gender Male
Sign Sagittarius
Birthday December 6th
Age 15-16
Height 172 cm (5'8") (-Eternal Summer-)

175 cm (5'9") (-Dive to the Future-)

Weight 59 kg (130 lbs)
Professional Status

2nd-year High School Student

Education Samezuka Badge.png Samezuka Academy

Unnamed middle school


Samezuka Swimming Club
Unnamed middle school swim club (former)

Swim Style


Events 4×100 m medley relay
Personal Status
Relatives Seijuro Mikoshiba (older brother)[1]

Isuzu Mikoshiba (older sister)[2]

Anime Episode 14
Voice Actors
Japanese Kenichi Suzumura
English Jerry Jewell

Momotaro Mikoshiba (御子柴 百太郎 Mikoshiba Momotarou) is one of the supporting characters in Free!-Eternal Summer-. He is Seijuro Mikoshiba and Isuzu Mikoshiba's younger brother and a backstroke swimmer, as well as a second-year high school student at Samezuka Academy. He is the "fearsome new face" to which his brother refers.[3]


Momotaro has golden eyes and red hair just like his brother, but in a messy and straighter fashion. He has a healthy, slightly tan complexion, and is of average height and build, but shown to be taller than Aiichiro Nitori.


Momotaro is a happy-go-lucky guy who likes hanging out with girls a lot. He's very much like his older brother, both in terms of swimming and personality. Just like Seijuro, he has a crush on Gou Matsuoka at first sight, saying that she's "pretty cute".[1]


Momotaro claims to have won many races in his previous school and that there's not a single person in his hometown who hasn't heard of him. When meeting Rin Matsuoka, Sosuke Yamazaki and Aiichiro for the first time, he states that the swimmers he competed against used to call him The Sea of Japan's Sea Otter.[1]


Main article: Momotaro Mikoshiba/Story


Main article: Momotaro Mikoshiba/Relationships


  • His hobby is hunting for stag beetles.[1] The biggest one he caught was about 8 centimeters. [4]
  • His motif animal is a sea otter.
  • His favorite proverb is, "Even Homer sometimes nods"[1]
  • His favorite dish is fried eggs.[1] Other favorite foods include triple-cheese burgers and chocolate pudding ice cream.[5]
  • Momotaro owns a pink T-shirt with a boy coming out of a peach at the back. There's a story about an old couple who found a giant peach with a little boy inside, naming him Momotaro. Additionally, momo is the Japanese word for peach.
  • His favorite pasta dish is vongole.[4]
    • This is most likely a reference to his motif animal, the otter, as one of the main ingredients in this dish is clams; with vongole being Italian for clam, and clams being a common part of a sea otters diet.
  • Momotaro's English voice actor, Jerry Jewell, also provides the voice for Mr Tachibana.


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Episode 14
  2. Iwatobi High School Swimming Club's Diary 2: Track 11
  3. Free!-Eternal Summer- episode 2
  4. 4.0 4.1 Free! Eternal Summer - episode 4
  5. Free!-Dive to the Future- Starter Book Character Profile (translated by donamoeba on Tumblr)