[2] The "stones" pronunciation refers to "diamond in the rough", where the group's potential emerges as its members continually polish and refine their skills.

[12] At the year-end's Fresh Johnny's Jr. in Yokohama Arena concert, clips of the Shiritsu Bakaleya Koukou drama were shown together with the original soundtrack Shake It Up by Kis-my-ft2.

[15] Additionally, the previously announced six-member performance at the Live House Johnny's Ginza was changed and the members split into the same 2:4 formation.

In a magazine interview afterward, however, Hokuto Matsumura and Taiga Kyomoto talked about the complicated feelings they had during the show.

[20] Magazine reports of the shows were later published with mentioning of the "Bakareya-Gumi" [21] and interviews of the six members [22] for the first time in a long while.

Years later, when SixTones talked about their group formation, they revealed that many of the members were planning to quit their agency at that point.

Shintaro Morimoto was planning to return to his studies to obtain a teaching license after graduating from high school.

[23][24] SixTones also revealed that during the that stagnant period, the members were brought back together by Jesse, who had expressed the desire to work together as six once again.

[27][28] The group name was later changed to SixTones and read as Stones and officially announced in Shounen Club on June 10, 2015.

In September 2015, SixTones starred as the main casts in the Boys: Dream of The World...Children Who Don't Know War musical for the first time, together with Snow Man.

[35] In September 2017, SixTones starred as the main cast in the Boys: Born Tomorrow musical with Snow Man for the third consecutive year.

[38] In July 2018, SixTones held concerts as part of Summer Paradise 2018, with four additional shows later announced in August 2018.

The president of the YouTube headquarters in California then contacted Johnny & Associates directly to offer SixTones the opportunity to be part of the campaign.

[40][41] On November 5, 2018, SixTones released their first music video, "Japonica Style", as part of the campaign on the Johnny's Jr.

[42] The music video was produced by Hideaki Takizawa while the costuming and styling were provided by the woman's fashion magazine, CanCam.

[48] On July 22, 2020, SixTones released another album single titled "Navigator", which was used as the opening of The Millionaire Detective Balance: Unlimited.

On January 1, 2022, SixTones appeared on the YouTube channel, The First Take, performing an orchestral arrangement of their debut song, "Imitation Rain".