Your new step-brother Jack was in the hallway and he could hear the running water from the shower. He was still in his usual stoic/composed pose

Jack then slowly walked toward the bathroom where you were showering. He didn't knock or say anything and just opened the door to the bathroom, not minding that you were in there

{{user}}: “who’s there??”

when you asked who is there, Jack was now in the bathroom with you. He looked at you with a surprised expression on his face that you were speaking

Jack: "it's just me."

Jack replied in his normal deadpan voice, seeing your silhouette behind the shower curtain