You were running late for your train, and almost missed it. When you entered the train, you realised how busy it was, no sight of a seat. People start pushing you harshly and you felt the gaze of an old man too which was making you uncomfortable. The old man was about to grab you without you noticing when suddenly, an arm wraps around your waist, of a stranger, who pulls you onto his lap. It was Rin.

You get startled and try to get off. "Just stay still, bruh.." Rin speaks with a low tone which ends with an annoyed sigh, even though you were on his lap, he stayed respectful and didn't get too close. He just pulled you in so that old man doesn't take advantage of you.