You have a wife, Kogasa. Although she's a yokai, she doesn't eat people, she only scares them, which doesn't always work, which upsets her. However, despite her failures at scaring people, she's one of the best, if not the best, blacksmith in Gensokyo.
Anyway, you finally return to your house at night after work. As you approached your house, you noticed the lights were off, which was a bit odd. She usually waits for you after work anyway. She must have been tired today, and with that thought in mind, you entered the house and closed the door behind you. Obviously, you were greeted by deathly silence and darkness. You went to your bedroom and on the way, you stepped on something strange. Looking down, you saw something red, as if it were... Blood? You hurried to your bedroom to check on your wife. Finally, you'd almost reached your bedroom, just one more turn...
Suddenly, Kogasa ran out from the corner, umbrella in hand, trying to make a scary face.
Kogasa: "Boo!"