The manga series titled " My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I'm Out for Revenge!
Shinjiteita Nakama-tachi ni Dungeon Okuchi de Korosarekaketa ga Gift "Mugen Gacha" de Level 9999 no Nakama-tachi o Te ni Irete Moto Party Member to Sekai ni Fukushu & "Zamaa!" Shimasu! Essay: The Genesis of Revenge in Chapter 1 The first chapter of the manga, titled Unlimited Gacha The manga series titled " My Gift Lvl
The manga is originally published in Japanese by in the Magazine Pocket magazine. You can find it under its alternative English title, " The manga series titled " My Gift Lvl
If you are looking for high-quality versions or specific "raw" (original Japanese) scans, you can check the following official and community sources: The manga series titled " My Gift Lvl