Orihara Aina

This is the appearance of your precious childhood friend, who has become an energetic swimming girl.
With her hair cut short and her skin tanned to a bronze glow, she joined the swimming club after entering the academy. In an environment where she didn't have to think about anything difficult and could simply focus on achieving good results, she enjoyed the sport freely and lightheartedly.

Recently, however, she has started wanting to go to the same higher education institution as the protagonist and has begun aiming for a sports recommendation (scholarship). While only her body has matured, her lack of foresight from childhood remains unchanged, resulting in a personality that is easily deceived by "bad males." Furthermore, she still refers to herself using the masculine/childish first-person pronoun "Boku," just as she did when she was little.

She honestly shows her affection for the protagonist and has accepted your confession of love. However, your "wholesome relationship" is witnessed by others... and to make matters worse, her stagnant swimming performance is also taken advantage of...