Enrolled at Aikatsu Academy

Inspired by the top idol unit Soleil, Mieru, Meh, Parin, and Taimu enrolled at Aikatsu Academy, a school for aspiring idols, and threw themselves into lessons every day.

Wanting people to get to know them, Mieru, Meh, and Parin founded the Streaming Club and started a new kind of Aikatsu!, aiming to become “the top idols closest to their fans.”

They took part in the Fresh Idol Fes, a live event hosted by the academy, and grew one step further as idols!

To perform at the “Brand Muse Fes,” they took on the challenge of creating original brands together with their fans.

At a fes open only to brand muses, they performed their first solo stages! Mieru (Cute type), Meh (Cool type), and Parin (Pop type) each unveiled a dress from her own original brand for the first time!

Taimu, a classmate who had been secretly following the Streaming Club, was moved by the three members' Aikatsu and decided to join. She joined as a new Sexy-type idol, and the Streaming Club began its activities as a group of four!

They performed as the opening act at “Kirakkira!,” the 10th anniversary event for Aikatsu! Akari Generation.

The four-member unit was named hélianthe!

They successfully held their first solo live, “hélianthe 1st LIVE,” streamed for free.

The name of hélianthe's Special Appeal is “Shiny hélianthe.”

“Aikatsu! Challenge,” a show in which they take on all kinds of challenges on their way to becoming top idols, started streaming!

A curriculum called “Aikatsu! Mission” was added as a second-year assignment.

To enter the academy's “Unit Audition,” the Streaming Club held its own audition to find partners.

Mieru × Taimu formed the unit “Dear Destiny,” and Meh × Parin formed the unit “Peace Tanteidan☆”!

They performed as the opening act at “ALL AIKATSU! ROCK FES.”

Toward the day they can show off their Premium Rare Dresses! A new segment, “Road to the Premium Rare Dress!,” began on Demikatsu Tsushin.

At Mieru's birthday party, she unveiled her Premium Rare Dress, the Love in Letters Coord.

A live show presenting the results of their first-term missions. Their first paid in-person live (at Shibuya GRIT) was a huge success! Dear Destiny and Peace Tanteidan☆ made their debut!

“Road to the Solo Collection CD” begins. After a first term focused on completing a large number of tasks, they moved on to a phase of refining their vocal expression.

At Parin's birthday party, she unveiled her Premium Rare Dress, the No.1 Hero Coord.

School festival events: a coord battle using Aikatsu! cards, and a handmade fashion show introducing the outfits the four members of hélianthe usually wear.

At Meh's birthday party, she unveiled her Premium Rare Dress, the Nocturne Carnival Coord.

The fourth special class, learning from a senior idol. The assigned song was “STARDOM!.”

Released “Blooming Hélianthe,” the Aikatsu Academy! Streaming Club's first CD album.

Sports festival event: they took on three events within a time limit (a 10 km Aikatsu run, signing 30 autographs, and 5 surprise dance challenges). Working together, the four completed them all.

At Taimu's birthday party, she unveiled her Premium Rare Dress, the Grace Couture Coord.

They appeared as guests at “HAPPY∞5th FANtime!,” the 5th anniversary event for “Aikatsu Planet!”

A two-day show marking the culmination of their Aikatsu! as second-year students, held both in person (at harevutai) and via paid livestream.

In recognition of the Premium LIVE and their results in “Aikatsu! Mission” (First and Second Terms), their promotion to third year was confirmed. The academy also recommended them for the Legend Course.

Before moving on to the Legend Course, they streamed the final episode of Demikatsu Tsushin '25.

A documentary following the journey of Mieru, Meh, Parin, and Taimu so far was released.

They appeared alongside legendary idols at “ALL AIKATSU! BAND LIVE ~LEGGENDA VOCE~.”