My Female Sword Master, Who I Live With, Is So Cute That I’m Happy Every Day is a Manga/Manhwa/Manhua in english language, MONSTERS 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

Eugene Dawson, a boy who wants to become stronger, is currently training under his master, Liza Parsandra, who is known as the Master of the Sword. He is the strongest in physical strength, but his private life is a mess. He is happy every day with his cute master... or so he thought, but her defenseless and sexy body and unconscious skinship make it impossible for him to train...!? Can I really become stronger like this!?