The witch and her butler who can only summon shields

The protagonist was walking home when a ball of light suddenly hit him. Not knowing what it was, it gave him nausea, and he ended up unconscious. When he wakes up, he notices he is in an unfamiliar forest. Not knowing what to do, he looks for a place to stay but ends up being chased by terrifying goblins. When the goblins lost track of him, he found a house surrounded by flowers. He knocks on the door, but no one answers, so he enters the home. As he was sitting on the bed, he accidentally fell asleep due to his lack of stamina. When he woke up, he was tied up in a chair, and in front of him was a beautiful girl he had never seen before in his life. It was like love at first sight. And the girl got angry at the protagonist because he was trespassing on her property, so she punished him by making him her butler.