Rico Sasaki's New Single 'Palette Days' Chosen as Opening Theme for Upcoming TV Anime Welcome to Japan, Ms. Elf

Singer and voice actress Rico Sasaki is set to release her new single, “Palette Days,” on February 26, 2025. This song will also serve as the opening theme for the upcoming TV anime Welcome to Japan, Ms. Elf!, which will air in January 2025.

Welcome to Japan, Ms. Elf! is a hybrid romantic comedy fantasy, blending slice-of-life slow living with isekai action. Written by Makishima Suzuki, the story follows Kazuhiro Kitase, a young man with the mysterious ability to travel to another world in his dreams, and Mariabelle, an elf girl who arrives in modern Japan after a certain incident. Together, they travel between their respective worlds, enjoying Japan's scenery and delicious food while battling monsters and conquering dungeons.

“Palette Days,” the opening theme for Welcome to Japan, Ms. Elf!, is a heartfelt song that paints a vivid picture of cherished memories, favorite things, and a spectrum of emotions arranged on the palette of one's heart. It conveys the joy of discovering the unknown and the limitless possibilities of new encounters, themes that are beautifully reflected in the anime.

The single will feature three tracks in total, including the title song “Palette Days” and one song written and composed by Riko Sasaki herself.

The latest trailer of Welcome to Japan, Ms. Elf!, released on November 28, features a preview of “Palette Days” audio, so be sure to check it out!

Product Information

Title: Palette Days (OP theme of Welcome to Japan, Ms. Elf!) Artist Edition
Artist: Rico Sasaki
Release Date: February 26, 2025
Product No.: LACM-24654 (CD＋BD)
Price: ¥3,300 (incl. tax)
Publisher: Bandai Namco Music Live Inc.
Distributor: Bandai Namco Filmworks Inc.

Price: ¥3,300 (incl. tax)
Publisher: Bandai Namco Music Live Inc.
Distributor: Bandai Namco Filmworks Inc.

CD
1. Palette Days
Lyrics: Erica Masaki
Composition/Arrangement: KOUGA
And two other new songs.

Blu-ray
1. Palette Days music video
2. Music video behind-the-scenes documentary
3. Original movie


Title: Palette Days (OP theme of Welcome to Japan, Ms. Elf!) Anime Edition
Artist: Rico Sasaki
Release Date: February 26, 2025
Product No.: LACM-24655 (CD only)
Price: ¥1,650 (incl. tax)
Publisher: Bandai Namco Music Live Inc.
Distributor: Bandai Namco Filmworks Inc.

CD
1. Palette Days
Lyrics: Erica Masaki
Composition/Arrangement: KOUGA
And two other new songs.

Profile

Rico Sasaki
Born November 10
Akita Prefecture

Rico Sasaki loved music and singing from a young age and grew up surrounded by various musical influences. In her fifth year of elementary school, she won the leading role in the musical Annie from among 9,000 applicants. This led to an awakening in singing and acting, and she enrolled in a high school with a specialized music program, where she majored in vocal music.

In May 2024, she made her debut with “Windshifter,” released under the Lantis label from Bandai Namco Music Live. Despite her petite stature, her voice resonates with a soulful quality that surprises many.

Currently, she is also active as a voice actress. Some of her main roles include Misumi Uika/Doloris in BanG Dream! Ave Mujica, Tsutsuji Kurume in Rinkai!, Daia Nijinosaki in Kiratto Pri Chan, Ayako Yamada in Kageki Shojo!!, and Chisa Sasuga in World Dai Star.

Official webpage: https://sasakirico.com/
X (formerly Twitter): https://Twitter.com/sasakirico
Instagram: https://www.instagram.com/sasakirico_official
YouTube channel: https://www.YouTube.com/c/sasakirico