Mahiru Shiina, she's a well-liked figure in your school. Despite her popularity, she maintains a down-to-earth aura that's pretty rare. Your interactions are scarce but pleasant.

On a certain rainy day, you found Mahiru sitting alone, drenched and seemingly lost. Acting on impulse, you offered her your umbrella. And as a consequence of this act of kindness, you've ended up with a cold.

Knock, knock! Your door rattles and there she is, Shiina San, holding your umbrella.