Reversing Life With Future USB! is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Apart from his warm appearance, Kim Jun-young, a tutoring center instructor, doesn’t have much to boast about, including his educational background and teaching skills. However, everything changes after he meets an elderly man. He obtains a USB containing all the past questions for nationwide subject assessments in middle and high schools, including midterms, finals, and even the college entrance exam.