Female Singer KIMIKA Appointed as Brand Ambassador Model for Jewelry Brand <Over Excellent>
Singer KIMIKA has been appointed as the new brand ambassador for Over Excellent, showcasing their unique O.E. Cut Diamond jewelry.
📋 Article Processing Timeline
- 📰 Published: April 2, 2026 at 02:00
Hohoemi Brains Inc. (Headquarters: Ginza, Chuo-ku, Tokyo), the operating company of the jewelry brand <Over Excellent>, has appointed female singer KIMIKA—who possesses both a crystal-clear singing voice and powerful, soul-stirring expressiveness—as its brand ambassador model.

KIMIKA Appointed as Brand Ambassador Model

The charm of the songstress KIMIKA, expressing luxury, bridal, and basic items
Singer KIMIKA is an artist who is steadily expanding her support base with her one-of-a-kind singing voice and solid expressiveness.
Similarly, our company <Over Excellent> has also received high praise from customers who value intrinsic worth, thanks to the one-of-a-kind brilliance created by the O.E. cut diamond.
What both share is the fact that while they already possess distinct charm and ability, they also hold the potential to expand to even more people in the future.
We want to deliver the unique value each holds to society even more widely.
The overlapping of these sentiments led to this ambassador appointment.
Brand Ambassador Model Profile
<KIMIKA Profile>
Singer
Belongs to Japan Music Entertainment (AURA)
Date of Birth: August 3, 1994
Blood Type: B
Birthplace: Tokyo
Special Skill: Dance
From singing on a corner street to the world.
Armed with a soulful, husky voice tinged with ephemerality,
KIMIKA is a singer gathering attention mainly on SNS and television.
Starting her career from street live performances, she expanded her support through her solid singing and expressive abilities.
She has grown into a highly influential presence both domestically and internationally, with total views on SNS exceeding 100 million.
On television, she has appeared on shows such as Fuji TV's "All Star Chorus Battle", TBS's "Ningen Kansatsu Variety Monitoring", and TV Asahi's "Honoo no Challenger", leaving a strong impression on viewers with her singing voice and presence. She is also expanding her activities by singing drama theme songs.
While having roots in R&B and soul, she captivates audiences with songs sublimated as pop music,
and through delicate yet powerful live performances.
She has succeeded in her tour final performance at Zepp Shinjuku and numerous other lives,
steadily expanding her stage.
From Shibuya to the world.
KIMIKA's story continues to evolve today on both media and real-world axes.
Additionally, a one-man performance has been confirmed to be held at I'M A SHOW in Yurakucho on Friday, July 24, 2026.
KIMIKA Official Instagram
KIMIKA Official TikTok
KIMIKA Official YouTube Channel
Message from New Over Excellent Brand Ambassador Model, KIMIKA
I am truly grateful from the bottom of my heart
to have been appointed as the brand ambassador model for <Over Excellent>.
To me, jewelry is not just something beautiful; it gives confidence to the person wearing it,
adds color to their life, and allows them to project their own unique story onto it.
I deliver my songs with the hope that they can do the same, so I felt an affinity there,
which is why I accepted this offer.
Alongside the jewelry of <Over Excellent>, I hope to continue my activities as an artist who,
while demonstrating a one-of-a-kind presence, can also coexist in someone's future.
KIMIKA Wears Lupinus ~Rond~
Bearing the name of the "Lupinus" flower, which holds the meaning of hope for the future,
"ROND" is born from our popular series.
The clear brilliance of the center O.E. cut diamond
is gently enveloped like petals by a double row of melee diamonds.
The delicate brilliance layered in multiple folds creates depth and a rich spread of light,
adding a dignified presence and elegance to the chest.
"ROND" means "circle" in French, symbolizing unbroken beauty and a continuous flow of feelings.
The form, designed to look beautiful from every angle, continues to emit a sophisticated brilliance.
While being an elegant size that accompanies daily life, it is a special presence fitting for anniversaries and important gifts.
It is diamond jewelry that adds a brilliance like blooming flowers of hope to the milestones of life.


"ROND" is a collection originally born from the shape of a circle, meaning "connection."
Our encounter with KIMIKA happened within this context.
The overlapping desire to deliver this brilliance has now taken on a new meaning.
The overlapping light is a symbol of a connection that will continue into the future.
<<Left Image>>
Pt O.E. Cut Diamond Necklace 319,000 yen Model: AP-225
Pt O.E. Cut Diamond Pierced Earrings 220,000 yen Model: AE-81
Pt O.E. Cut Diamond Ring 330,000 yen Model: AR-210
<<Items worn by KIMIKA>>
Necklace
Pt O.E. Cut Diamond Necklace 319,000 yen Model: AP-225
Rings
Index Finger
Pt O.E. Cut Diamond Ring 330,000 yen Model: AR-210
Middle Finger
Pt O.E. Cut Diamond Full Eternity Ring From 352,000 yen Model: DM-169
Pierced Earrings
Pt O.E. Cut Diamond Pierced Earrings 220,000 yen Model: AE-81
* Prices shown include tax.
* The price and stone weight of the Full Eternity Ring (Model: DM-169) vary depending on the ring size.
* Some melee diamonds may use diamonds other than the O.E. cut diamond.
* A price revision is scheduled for Wednesday, April 22, 2026. Therefore, the displayed prices may differ
from the actual prices. We ask for your understanding in advance.
The Beauty of a Bride Embodied by Singer KIMIKA
A New Worldview Colored by a Bouquet-Motif Engagement Ring
~ "The Most Beautiful Moment in Life" Expressed by Singer KIMIKA ~
We are releasing bridal visuals colored by an engagement ring with a bouquet motif.
In these visuals, she wears the brand's representative bouquet-motif engagement ring.
The beautiful brilliance of the O.E. cut diamond placed in the center, which captivates the heart at first glance, adds elegance and glamour to the bride's hands. The delicately surrounding diamonds bloom like a bouquet of blessings.
Each piece of <Over Excellent> bridal jewelry is given the name of a flower.
The thoughts put into each one gently accompany the couple's future, and their sophisticated forms
gently envelop the couple's love.
The figure of a bride wrapped in a wedding dress, quietly layering her feelings.
Overlapped with the songstress's crystal-clear expressiveness, it elegantly projects the most beautiful moment in life.
To you, the brilliance and flutter fitting for eternal love, dwelling on the ring finger of the left hand.


<<Items worn by KIMIKA>>
Engagement Ring
Pt O.E. Cut Diamond Ring From 801,900 yen Model: DR-52 (Bouquet)
Marriage Ring (Wedding Band)
Pt Diamond Ring 231,000 yen Model: DM-52 (Eucharis)
<<Left Image>> From top
Engagement Ring
Pt O.E. Cut Diamond Ring From 231,000 yen Model: DR-06 (Sunflower)
Pt O.E. Cut Diamond Ring From 572,000 yen Model: DR-41 (Calceolaria)
Pt O.E. Cut Diamond Ring From 801,900 yen Model: DR-52 (Bouquet)
* Prices shown include tax.
* The price of engagement rings varies depending on the color/clarity grade of the center diamond.
* Some melee diamonds may use diamonds other than the O.E. cut diamond.
* A price revision is scheduled for Wednesday, April 22, 2026. Therefore, the displayed prices may differ
from the actual prices. We ask for your understanding in advance.
About Over Excellent and O.E. Cut Diamond
Over Excellent is a jewelry brand orchestrated by the O.E. cut diamond, from which inner beauty overflows, and the beautiful forms that envelop it. We deliver these pieces alongside your colorful moments so that they may become your own beloved items found through chance encounters.
The "O.E. Cut" is a new cut developed by Hohoemi Brains Inc. ahead of the rest of the world to maximize the beauty inherent in diamonds. Researching the angle at which a diamond looks most beautiful, and designed through advanced optical calculations, it greatly improves the effects of brilliance, sparkle, and color compared to conventional diamonds, realizing unparalleled beauty. Furthermore, while it has the same 58 facets as the conventional excellent cut, which has been considered the best, it possesses a brilliance that overwhelms it.
FAQ
Who is the new ambassador for Over Excellent?
It is KIMIKA, a female singer known for her overwhelming expressiveness on SNS and television.
What is the O.E. Cut Diamond?
It is a unique cut developed by Hohoemi Brains based on advanced optical calculations to maximize brilliance and sparkle.
Are there any price changes scheduled for the jewelry?
Yes, a price revision is scheduled to take place on Wednesday, April 22, 2026.