[2026] Spring Anime Theme and Insert Songs (April Cour) | A Roundup of Must-Listen Tracks!

Komorebi SlopeGalileo Galilei

TV Anime “Kujima Utaeba Ie Hororo” Non-Credit Opening Video | Airing from April 2026 on TOKYO MX, MBS, BS-TBS, Mie Television, and AT-X

Galileo Galilei – Komorebi Slope (Official Music Video) | TV Anime “Kujima Sings, the House Falls Apart” Opening Theme

A standout opening theme that will color the anime starting with the arrival of spring.

This track captivates with a delicate soundscape and lyrical melody that evoke a gentle warmth within the crisp air.

Themes like family life and subtle changes are carefully rendered through clear, translucent vocals.

Selected as the main theme for the anime “Kujima Utaeba Ie Hororo,” which begins airing in April 2026, it’s a work by Galileo Galilei to be digitally released the same month.

Created in response to an offer from the original author, the song aligns beautifully with the story’s worldview.

It’s a soothing number that nestles into everyday scenes—perfect for those who want to savor it on spring walks as a new chapter of life begins.

ATTITUDEaespa

TV anime “KILL BLUE” non-credit opening video | aespa “ATTITUDE”

ATTITUDE

Aespa is a group that operates with a unique concept themed around a virtual world and continues to gain global popularity.

Chosen as the opening theme for the TV anime “KILL AOH,” this track embodies an unwavering determination to stay true to oneself.

Its striking beat and edgy vocals align perfectly with the show’s sense of speed and the protagonist’s duality.

Many listeners will likely be drawn in by the energetic sound that boosts self-confidence.

It’s a fast-paced, pop-infused dance tune you’ll want to play when you want to maintain your own rhythm in a new environment.

transparentNovelbright

TV anime “The Ice Wall” Non-Credit OP Video | Novelbright “Transparent”

Novelbright – Transparent [Official Music Video]

This is a song that lets you feel both the warmth of spring and the delicacy of youth at the same time.

Included on the album “PYRAMID,” released in April 2026, the track was chosen as the opening theme for the anime “Ice Walls.” Sung with heartfelt emotion by Yudai Takenaka, the vocalist of Novelbright, it layers a gentle voice over an up-tempo melody to gradually warm the listener’s heart.

It’s crafted to gently stay by your side during times when you struggle with personal boundaries or feel anxious about the future.

While tenderly embracing the confusion of running into invisible walls, it still gives you the strength to face forward and move on.

Give it a listen when you want to take a step in a new environment or need just a little courage!

First Love MomentFaulieu.

[Non-credit OP] TV Anime “Lady Canaan Is, After All, Easy to Sway” | Faulieu. “First Love Moment”

Faulieu. “First Love Moment (short ver.)” -Music Video- (TV Anime “Lady Canaan Is, After All, Easy to Sway” OP Theme)

This charming number captures the flutter of falling in love and the frantic thumping of a restless heart, set to a pop-rock sound.

Chosen as the opening theme for the anime “Kanan-sama Is Honestly a Softie,” the track is crafted by the girls’ band Faulieu.

The slap bass and ever-shifting beats brilliantly convey the zany energy of a romantic comedy! Just listening to it fills you with excitement.

Give it a thorough listen when you’re feeling that spark of a new romance.

TelepathyIS:SUE

Main PV with theme song for the TV anime “Candy Caries” | Broadcasting starts within TBS’s “Yoru no Brunch” from Wed, 4/15 at 23:56!

IS:SUE, a girls’ group born from an audition show and known for their versatile expressiveness, is drawing attention.

Chosen as the theme song for the TV anime “Candy Caries,” this track is a fresh number that takes a cute and pop-oriented approach, different from the group’s previously cool image.

Its catchy melody, themed around a mysterious bond where hearts connect, meshes perfectly with the anime’s world.

This uniquely addictive pop tune is an anime song you’ll want to hear if you’re looking to amplify the excitement of spring’s new encounters and fluttery feelings!

Ciao CiaoSophià la Mode

Non-credit opening theme of the TV anime “One-Room Full-Enjoyment Life!”

Ciao Ciao

A punk-pop number that paints a bright, lively world with a catchy, crisp sound and friendly word choices.

This is the song performed by Sophià la Mode, a hybrid idol project where members with proven track records in the existing idol scene join forces with fresh faces.

Chosen as the opening theme for the TV anime “One-Tatami Room: Fully Enjoying Life!” set to air from April 2026, it brilliantly links the atmosphere of the upcoming series with the group’s own fresh momentum.

Brimming with euphoria, the ensemble is an uplifting tune you’ll want to play when you need to blow away the anxiety of jumping into a new environment and boost your spirits.

Submarine YouthreGretGirl

Non-credit OP video for the TV anime “I Became Friends with the Second Cutest Girl in the Class” | “Submarine Youth” reGretGirl

reGretGirl "Submarine Youth" Official Music Video | TV Anime 'I Became Friends with the Second Cutest Girl in the Class' Opening Theme

This is a song by reGretGirl, chosen as the opening theme for the TV anime “The Second Most Beautiful Girl in Class and I Became Friends.” Created with a deep reading of the original work, it carefully portrays the sweet and sour essence of youth and the frustratingly close-yet-out-of-reach distance between hearts.

While it’s a fresh and sprightly uptempo number, it also carries the nuanced emotional shading characteristic of the band.

Released right after the anime began airing, it’s a youth-sparkling track sure to light up live shows.