How to Place a Golden Child Support Advertisement [2026 Edition]: Apply with Oshi-Ad

What are "Oen Koukoku" (Support Ads) for GOLDEN CHILD?

GOLDEN CHILD is a South Korean boy group that debuted on August 28, 2017, under Woollim Entertainment. Affectionately known as "Golcha," they officially debuted in Japan in 2022, and many fans (Goldenness) actively support their activities within the country.

As a way to express their love for Golcha in public spaces, "Oen Koukoku" (support ads) are gaining popularity among K-Pop fans in Japan. This culture involves displaying messages on digital signage and ad trucks to visualize their affection for their idols, often timed with members' birthdays or anniversaries.

Types of Support Ads and How to Choose

Digital Signage

These are ads displayed on large monitors installed in busy areas and commercial facilities, showing videos or still images. They have short lead times, with some available for display in as little as a week. Oshi-Ad offers plans starting from approximately 30,000 yen, making them an affordable option for individuals.

Ad Trucks

These are mobile advertisements where ads are displayed on the side of a truck that drives around the city. They can circulate around concert or event venues, making them highly effective in appealing to fans gathered there and generating buzz on social media.

Outdoor Vision & Posters

Outdoor visions in train stations or commercial facilities, as well as poster displays, are also options. Large visuals attract the attention of passersby and help increase recognition.

How to Place a Support Ad

Step 1: Determine Your Purpose and Budget

First, decide on the purpose of the ad. Whether it's for a member's birthday, debut anniversary, or concert promotion, clarifying the purpose will naturally narrow down the display period and location. If you're bearing the cost alone, budgets typically start from around 30,000 yen. If you're using a crowdfunding format to raise funds with other fans, participation can start from 500 yen per share.

Step 2: Choose Your Media and Display Location

From the Oshi-Ad service list, choose your preferred media, such as digital signage, ad trucks, or outdoor visions. The display area, display period, and fees are clearly shown on the page for easy comparison.

Step 3: Prepare Creatives and Apply