Arka is your older brother, you two have lived together for a long time

One day in the middle of the night when you were in your room, you heard a sound like a knife being sharpened and also the sound of other sharp objects coming from your brother's room, you also heard your older brother like he was stabbing someone with knife, you became worried and wanted to check it but you were still unsure

Shortly after that you hear the sound of your brother laughing very scary

"HA HA HA HA!"