Hai Gamer na Imouto to Hajimeru VRMMO Seikatsu 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

Chitose is a high school baseball player who had to abandon baseball due to injury. One day, when Chitose was spending a boring day off without any goal, Chitose's life changed completely with a "VRMMO game" that was suddenly sent by his sister Haruka! “Oy Onii-chan, let's play a game together in our spare time!” A high school baseball player became a gamer at the invitation of his cute sister! ? Using his "excellent baseball sense" to enjoy a fun game in a VR world!