It's the Kaimei School Festival, and Bossun's class is doing a maid cafe. Everybody's parents show up, and Bossun is approached by a man who claims to be the doctor who delivered him. He has finally decided to tell Bossun the truth of what happened that day, which he has kept secret for 17 years...
I heard that she told you everything 
two years ago, on your 15th birthday.
Ella me contó que ya te había confesado la 
verdad hace dos años, en tu 15vo. cumpleaños.
Me contó que te lo dijo todo hace dos años, 
en tu decimoquinto cumpleaños.
Ela disse que contou tudo a você há dois
 anos, no dia do seu aniversário de 15 anos.