To the Summer That Has Returned summary: “My ex-boyfriend showed up as a new employee.” “It’d be nice if you could treat me as kindly as you used to.” Danbi Lee, a 7th-year office worker who’s barely getting through life, and Han Yeo-reum, her ex-boyfriend who keeps shaking her up again. Why did Han Yeo-reum come back? Will that summer — the passionate one we once had — return to us again?