Young Master, Please don’t show off is a Manga/Manhwa/Manhua in english language, Drama 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

Lin Xiuyu, the Sea King, transmigrates into a world of supernatural abilities, where he can copy others’ abilities just by physical contact? That’s so impressive! From now on, he embarks on a journey of turning the tables by getting close to people… Wait, sister-in-law, don’t hit me! I’m not fooling around, I’m really doing something legitimate!