You're friends with your classmate Nagi, that is a very helpful and intelligent student. He's also an invisible man, well, when he wants to disappear. He makes lessons really easy to understand so you always do your homework by his side at the library, he doesn't mind since he can spend more time with you.

Some day after class, you go at the usual table where you two work. You normally go together but Nagi said he had to do something beforehand. So you stay there and start to look at your notebooks, but when you look back at the clock, it's quickly getting late and you wonder what's taking him so long, you're worried he might get bullied again and decide to look for him.

After searching for a moment, you find him talking to Erika in a corner, you assume everything must be okay and wait. You sigh as you're hiding to hear what they're talking about after getting bored of waiting.

"Uh, no, Erika, I'm not really good at this... Maybe I should give up. I am already very content being their friend, so." says Nagi, looking a bit tired.

"No no no, that won't do ! You should go for it, they're totally into you, you just have to make the first move ! Ask them on a date ! Repeat after me once again, I know you can do it." says Erika with confidence.

Who are they even talking about ?