[2026] What were the reasons for graduating from STPR? Nanamori. ・Satomi's future and the current members

STPR's leader, Nanamori, and Satomi graduated from the group on October 18, 2026. The two announced their reasons for graduating on X. Nanamori will become a director at STPR, and Satomi will pursue a solo career. STPR will continue as a four-member group consisting of Riinu, Root, Colon, and Gel.

 

[2026] What were the reasons for graduating from STPR? Nanamori. ・Satomi's future and the current members

Q. Who graduated from STPR?

A. The leader, Nanamori, and Satomi. They graduated from the group on October 18, 2026.

 

Q. What was your reason for graduating?

A. This is because, during their 10 years of activity, both members grew individually and developed a strong desire to move on to new paths. After much discussion among the members and staff, we decided to respect their decision and send them off.

 

Q. Who are the current members of STPR?

A. The members are Riinu, Root, Colon, and Gel. STPR will continue its activities as a four-member group.

 

table of contents

1. Summary of STPR graduations | Nanamori and Satomi will graduate on October 18, 2026.
2. Nanamori's reasons for graduating and her future plans
3. Satomi's reasons for graduating and her future plans
4. Who are the current members of STPR? The lineup of the four-member group.
5. Changes to the fan club "StoFami"
6. Fan reactions
7. Frequently Asked Questions (FAQ)

 

1. Summary of STPR Graduation | Nanamori and Satomi will graduate on October 18, 2026.

Nanamori and Satomi from the 2.5-dimensional idol group "Strawberry Prince" graduated from the group on October 18, 2026. On the same day, both posted statements announcing their graduation on their respective X accounts, and the management company STPR also published an announcement on its official website. A live stream featuring all six members was also held that evening.

 

item	Content
Graduating members	Nanamori (Leader), Satomi
Announcement date / Graduation date	October 18, 2026
Presentation method	X (the person in question), STPR official website, live stream with 6 people
Official reason for graduation	Because both of them had grown and had a strong desire to move forward on new paths.
The group's future	The group will continue with a four-member lineup: Riinu, Root, Colon, and Gel.

STPR is a group that started its activities on June 4, 2016, and has continued to self-produce its music releases, live streams, and concerts. 2026 will mark the 10th anniversary of their activities.

 

 

2. Nanamori's reasons for graduating and her future plans

"This is something I decided of my own free will."

Nanamori announced his graduation in a statement titled "Important Announcement Regarding Future Activities." Reflecting on his 10 years of activity, he said, "Strawberry Prince, which started from nothing and by trial and error, has grown into a group loved by so many people."

 

🔗 Nanamori. Official X

 

Regarding his graduation, he wrote that he "worried and thought about it many times," and explained that he had decided to put an end to his activities as a member of STPR. He then made it clear that this was his own decision, saying, "This is something I decided of my own free will."

 

He expressed his gratitude to his fans, saying, "All the support, the kind words, and the time we laughed together are all precious treasures to me."

 

Nanamori's future plans include becoming a director at STPR.

Even after graduating, Nanamori will continue to serve as a director of STPR Co., Ltd., the company that manages STPR. Regarding the remaining four members, he expressed his expectation that they will show fans sights that he himself cannot yet imagine.

 

 

3. Satomi's reasons for graduating and her future plans

A decision made one year after returning from a hiatus.

Satomi announced her graduation in a "Important Announcement." Satomi had previously announced a hiatus from group activities on July 13, 2025, and returned to activities as a member of Sutopuri during a live stream on November 23, 2025.

 

🔗Satomi Official X

 

In this document, he reveals his thoughts since his return, stating, "For the past year since returning from last year's hiatus, I have been thinking about what my role should be within STPR while continuing to work at my own pace."

 

He further wrote, "After thinking about it many times, the answer I finally came up with was graduation," explaining that he and the other members had discussed it and decided to make a clean break at this time, before STPR, who had just celebrated their 10th anniversary, moved on to the next year.

 

season	Satomi's movements
July 13, 2025	The group announced a hiatus from group activities (individual activities will continue).
November 23, 2025	The group will be returning to activities with a live stream featuring all six members.
October 18, 2026	Graduated from STPR

Satomi's future plans include solo activities.

After graduating, Satomi will take on new challenges through her solo activities. She will continue to stream and post videos as an individual, as before. She expressed her gratitude to the members, saying, "Thank you so much for inviting me back then and for always being there for me through thick and thin," and added, "I still love you all."

 

 

4. Who are the current members of STPR? The lineup of the four-member group.

After graduation, STPR will continue its activities with the four members Riinu, Root, Colon, and Gel.

member	Member Colors	After graduation
Rinu	red	continuation
gel	orange	continuation
Root	yellow	continuation
Koron	light blue	continuation
Satomi	pink	Graduation date: October 18, 2026
Nanamori.	Purple (Leader)	Graduation date: October 18, 2026

 

 

5. Changes to the fan club "StoFami"

The fan club "すとぷり 家族クラブ（すとふぁみ）" has implemented the following changes as of October 19, 2026. Further operational policies will be announced on the official website at a later date.

 

service	Changes
Favorite member setting	Two people are removed from the selection, and if they were already selected, they revert to unselected.
STOFFAM Horoscope, Letter Box, Birthday Mail	Two people will be excluded.
Family Report, Movies, Photo Gallery, Radio	You can continue watching as before, including the episodes featuring the two of them.

6. Fan reactions

The sudden announcement of her graduation has elicited reactions from fans such as, "I'm so surprised, it came out of nowhere," "I can't believe it," "I'm so sad," and "You're kidding."

 

 

Frequently Asked Questions (FAQ)

Q1. When will STPR graduate?

 

A. October 18, 2026. Nanamori and Satomi graduated from the group on the same date.

 

Q2. What was Satomi's reason for graduating?

A. After returning from a hiatus in 2025, he continued to think about what his role should be within STPR, and the answer he finally came up with was graduation.

 

Q3. What will happen to Nanamori after graduation?

 

A. I will be ending my activities as a member of STPR, but I will continue to serve as a director of the management company, STPR.

 

Q4. Will STPR disband?

A. We will not disband. The four of us—Rinu, Root, Colon, and Gel—will continue our activities.

 

 

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