The Revenge: Presidential Escort 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.nl fastest updating comic site. The Summary is

On January 20, 2033, at 12:20 PM , the 49th President of the United States (White House), Liam is at the inauguration ceremony in Washington DC. During the inauguration speech of President Liam, his bodyguard, an SS(Secret Service ) named Souta who is known as "Aegis, the Shield of God" is by his side. Amid the speech, a terrorist attack targeting the President occurs. Souta uses his exceptional skills and successfully saves the President from the explosion but fails to prevent the next attack and tragically dies in explosion. However, when Souta wakes up, he finds himself back in his high school days......... The story begins with the high school student with the strongest physical abilities , embarking on a thrilling action packed journey to restart his new life.