I-I would like to...I would like to take Mochizuki Touya as my Husband!

—Yumina Ernea Belfast

TouyaSpoil Spoiler Alert: The following article has information not currently present in the anime or manga. Do not proceed unless you want to be spoiled.

Yumina Ernea Belfast



Kanji ユミナ・エルネア・ベルファスト
Romaji Yumina Erunea Berufasuto
Age 12 (Debut)
13 (Current)
Gender Female
Blood Type N/A
Species Human
Hair Color Blonde
Eye Color Green (Normal)

Green/Blue (Heterochormic due Mystic Eyes)

  • Princess Yumina
  • Bow
Personal Status
Occupation N/A
Novel Debut Light Novel Volume 1
Web Novel Chapter 4 #25
Anime Debut Episode 4
Manga Debut N/A
Japanese Marika Kōno
English Felecia Angelle

Yumina Ernea Belfast (ユミナ・エルネア・ベルファスト Yumina Erunea Berufasuto?) is one of the heroines In Another World With My Smartphone. Yumina is also the crown princess of the Kingdom of Belfast and she is currently traveling with Touya and everyone else.


Yumina has long blonde hair with green eyes (most of the time). Before meeting Touya, Yumina wears a dress for a royal attire. Later when joining the guild, Yumina begins to wear a white blouse with a blue ribbon, and a black top over that.[1]


Yumina is a polite and careful person who is an exemplary member of royalty. However, Yumina's actions for a princess are surprisingly bold.



  • Mystic Eyes - Eyes that allow sight of the true nature or personality of any person a user sees.
  • Magic Aptitude- She's able to use 3 attributes: WIND, EARTH, and DARK.
    • Summoning - Her aptitude toward dark type magic has grant her ability to use summoning magic. She is contracted to 3 kinds of beasts which she can summon, but in the Light Novel the only beast shown is the Silver Wolf meaning that the other beasts are unknown as of volume 4.
  • Bowmanship - she's skilled in the use of bow





  1. Light Novel Volume 1, Chapter 4

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