Old Man Reincarnates and Becomes a Genius Actor is a Manga/Manhwa/Manhua in english language, REINCARNATION 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

He gains out-of-this-world acting skills after reincarnating. Tanaka Taro, a humble actor, is stabbed to death one day and reincarnates as a little girl named Yamashita Maki. With a newfound talent for acting, Maki becomes a child prodigy and transforms the lives of everyone around her. Get ready for the overwhelming impact she has on the world!!