# 2024 Weiß Schwarz 【OSHI NO KO】 #OSK/S107-E039

> The Underground Idol Debut? Ruby trading card from the 2024 Oshi No Ko Weiß Schwarz series. This R-rarity character card is essential for Show Business and Idol decks.

Canonical URL: https://supercatch.com/product/weiss-schwarz-oshi-no-ko-underground-idol-debut-ruby-osks107-e039-r

## Identity

- **Year**: 2024
- **Manufacturer brand**: Weiß Schwarz
- **Set / series**: 【OSHI NO KO】
- **Card number**: #OSK/S107-E039
- **Product type**: TCG_CARD

## Description

The Underground Idol Debut? Ruby card, designated OSK/S107-E039, is a distinct character entry within the 2024 Oshi No Ko Weiß Schwarz trading card game. As an R-rarity unit, this card represents a pivotal moment in the series' narrative, focusing on Ruby's journey within the underground idol scene. For collectors of anime-themed TCGs, this card serves as a key component for fans of the franchise who appreciate detailed character representation and strategic depth.

In the context of Weiß Schwarz gameplay, Ruby functions as a versatile character card with specific subtypes tied to the Show Business and Idol themes. The card’s strategic value lies in its auto skills, which activate when Ruby attacks. If the player controls another Show Business character, Ruby gains a significant power boost, enhancing its offensive capability during critical turns. This synergy encourages deck builders to construct cohesive Show Business archetypes, making the card a functional asset for competitive play.

Furthermore, the card features a secondary ability that interacts with the memory zone. When Ruby attacks and the character Ai from B-KOMACHI is present in memory, Ruby receives an additional power increase and allows the player to reveal the top card of their deck. If the revealed card is Mask of Revenge, Aqua or a level 2 or higher card, it can be moved to the stock area, providing resource advantage. This mechanic rewards players for maintaining specific character presence and managing their deck efficiently. Collectors often seek out this card to complete their Oshi No Ko collection or to integrate its unique effects into their strategic builds, ensuring it remains a relevant piece in the Weiß Schwarz ecosystem.

## FAQ

### What are the gameplay mechanics of Underground Idol Debut? Ruby?

This character card features two auto skills. The first grants +1500 power if you control another Show Business character. The second grants +500 power and allows deck revelation if "B-KOMACHI" Ai is in your memory, potentially moving specific cards to stock.

### What subtypes does the Ruby card belong to in Weiß Schwarz?

Underground Idol Debut? Ruby is classified with the Show Business and Idol subtypes. These tags allow it to synergize with other cards in the Oshi No Ko set that share these specific characteristics.

### What is the rarity and set code for this card?

The card is an R-rarity release with the set code OSK/S107. It was released in 2024 as part of the Oshi No Ko expansion for the Weiß Schwarz trading card game.

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Last verified: 2025-11-29.