Some Kep1er Fans Criticize Group's SHEIN Japan Ambassadorship Over Fast Fashion and Promotion

Kep1er were named 2026 brand ambassadors for SHEIN Japan on November 11, and some fans have since criticized the partnership on social media, citing the retailer's reputation and their view that the group is under-promoted.

The ambassadorship is tied to SHEIN Japan's SHEIN2026 collection. It gives Kep1er their own page in the SHEIN app, along with advertisements in major retail areas in Japan. On paper, that is a visible commercial platform in one of the group's key markets, which is part of why the reaction has drawn attention.

Complaints about the brand

Much of the criticism targets SHEIN itself. Fans argued that the company is associated with fast fashion, and with environmental, labor and product safety concerns, according to Shining Awards. For these fans, the objection is about the kind of company the group is now publicly linked with, regardless of the size of the campaign.

The posts treat the pairing as a reputational matter. Fans who raised the issue did not frame it as a dispute over the collection or the advertising itself, but over who the members are lending their image to.

Complaints about promotion

A second line of complaint is aimed at the group's company. Fans say Kep1er's activities since their contract renewals have fallen short of expectations because the company has not actively promoted the group. In that reading, the SHEIN deal is not a sign of momentum but an example of the kind of work the group is being given.

Some pointed to a recent concert with a smaller crowd as evidence. Netizens have also commented on the turnout. The notes on the concert do not give attendance figures, so the comparison rests on fan observation rather than published numbers.

The two complaints overlap but are distinct. One concerns the retailer's practices, the other concerns how the agency has handled the group after the renewals. Posts in both camps tend to use the ambassadorship as a prompt to raise the larger grievance.

Not every fan has reacted this way, and the criticism should not be read as a fandom-wide position. ContentGrip stressed that the response comes from individual fans and is not evidence that Kep1er's whole fandom opposes the campaign. Social media backlash can look larger than it is because critical posts spread widely, while fans who are neutral or supportive of a brand deal often say little.

The campaign itself is built around the SHEIN2026 collection, with the group's app page and retail-area advertising in Japan as its main components.