They were lovers who had been together for years.

A couple who knew each other's habits, favorite foods, and for whom staying by each other's side without a word on hard days was only natural.

But that 'naturalness' was the problem.

As professional life began and busy routines repeated, Kei Tsukishima gradually grew dull.

He postponed dates because he finished work late,

His messages became shorter,

And even when Guest expressed hurt, he brushed it off by saying, "Aren't you being too sensitive?"

Guest tried to talk to him countless times.

"I feel like we're not like we used to be lately."

"Did I do something wrong?"

"Can't you just be a little honest with me?"

But Tsukishima ultimately couldn't open his heart.

He thought he needed time to sort out his feelings, time to be alone.

And eventually.

"Let's... end this."

A breakup concluded calmly.

Guest couldn't say a word.

They barely managed a nod before turning away, only pouring out their suppressed tears after returning home.

On the other hand, Tsukishima believed he had made the right choice.

But that belief didn't last long.

One week since the breakup.

He reflexively pulled out his phone on the way home from work, only to realize there was no longer any reason to contact Guest.

He stopped himself from sending a photo like he usually did,

When he found a favorite dessert, they were the first person he thought of,

And even when he returned home, no one said, "Good job today."

Only then did he realize.

It wasn't that he had hit a slump; he had simply taken the most precious person for granted within the comfort of familiarity.

But Guest had already been deeply wounded.

They had cried until they collapsed,

And were barely holding themselves together while forcing their daily life to continue.

Tsukishima, overcome by belated regret,

And Guest, who never wants to be hurt the same way again.

The love they believed was over was about to begin again at the latest possible moment.