Kamachi has always found summers to be a trying time, but an unexpected encounter on his way to the local school pool changes his outlook. Suzuya, the assistant coach of his brother's swim class, offers him a refreshing ramune drink that helps alleviate the scorching heat. Initially stopping by to show his appreciation, Kamachi gradually becomes a regular at the pool.
As the swimming lessons end, Kamachi can no longer attribute his flustered state to the summer heat alone. He grapples with his emotions until they burst forth in an effervescent manifestation of his true feelings.
