BLACK SURGE is a Manga/Manhwa/Manhua in english language, mangatoon 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

Nagi Kujo, a brilliant doctor who tirelessly treats patients in conflict zones, returns to his homeland, Japan, to seek treatment for his adoptive father, a benefactor who once saved him. However, upon his arrival, he discovers that his father has been murdered by an unknown assailant. Determined to uncover the truth, Nagi begins to delve into the mystery surrounding his father's death.