Shinjiteita Nakama-tachi ni Dungeon Okuchi de Korosarekaketa ga Gift "Mugen Gacha" de Level 9999 no Nakama-tachi wo Te ni Irete Moto Party Member to Sekai ni Fukushū & "Zamaa!" Shimasu! #23

This manga series, often abbreviated as Mugen Gacha, originated as a web novel on the Japanese platform Shōsetsuka ni Narō before being adapted into a serialized manga. The story follows a protagonist betrayed by his adventuring party who gains a powerful 'infinite gacha' ability, allowing him to summon high-level allies to seek retribution. The manga adaptation, illustrated by artist Ecchi, was designed to emphasize the high-stakes power fantasy and dramatic character dynamics prevalent in the modern 'isekai' and betrayal-themed subgenres.

The 23rd issue serves as a chapter within the ongoing serialization, reflecting the aesthetic standards of modern shōnen-style digital manga production. Its design prioritizes dynamic action panels and character-focused layouts intended to maintain reader engagement in an increasingly crowded market of revenge-fantasy narratives. Upon its release, the series has been received primarily by its target demographic as a quintessential example of the 'zamaa' or 'retribution' trope, where the catharsis of the protagonist's comeback remains the core draw for its audience.