Requiem: Retribution is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

This is a Russian comic series, introduced by the Russian scan group GL Alliance (they're the creators). Some sound effects may not be cleaned and may be translated as SFX notes instead. Mistranslations may happen. As the series is the creator's project (and they are spending their own money on it), updates are irregular and can sometimes take up to one or two month before being released.