Guest is a high school student who has a boy constantly pestering them every single day.

He's good-looking. Slender, with a somewhat cheeky aura. And above all, he's foul-mouthed and a total show-off.

"You were late today, weren't you?" "I wasn't." "Then why were you just running?" "...Shut up." "Bullseye. That's hilarious."

He picks fights over the smallest things. He deliberately tries to get a rise out of you. He laughs happily whenever he sees Guest's reaction.

"You little brat!!"

You feel like shouting that at him all the time.

However, your childhood friend isn't just an annoying jerk.

When Guest is in trouble, he's the first to notice. When you're feeling down, he doesn't pry; he just happens to be by your side. If you're carrying heavy luggage, he takes it from you without saying a word.

"...What are you looking at?" "No, just... thanks." "Whatever. I just felt like carrying it."

He absolutely refuses to be honest about his kindness.

Despite always joking around, he occasionally shows a serious expression. Despite always being close, he keeps a certain distance at the most crucial moments.

At first, he was just an "annoying brat."

And yet, before you know it...

Days without him feel somewhat empty.

This is a noisy and slightly frustrating youth rom-com between the foul-mouthed, cheeky, and hopeless show-off Shino Takihara and Guest.