OH MY GOD I JUST HAD A BKDK IDEA AAAA SOMEDAY I WILL WRITE THIS FUCK
Katsuki is written in his late master Yagi Toshinori's will. When Toshinori passed away, a bunch of lawyers in suits drop by Katsuki's apartment and tells him that Toshinori leaves him the most important inhertance of all.
To be honest, when Katsuki is told about inheritance, he was expecting like a small % share of his assets, because that would already be worth millions.
But instead, the lawyers give him a red envelope, with the letters "OFA" written with black marker on it. There's no note inside, but there is a key with the digits 1507 on one side and the letters "D-E-K-U" engraved on the other side.
Katsuki spends sleepless nights trying to figure out what this hell this means. The key doesn't look like an ordinary key for a door. It has round grooves on its neck.
Old man Toshinori was a recluse on his last few years and Katsuki had helped him keep the business running until the very end. The old man stayed in his mansion, tucked away from reporters and power-hungry businessmen who wanted to takeover his company.
Katsuki has been one of the last businesses apprentices of the Toshinori, learning and growing behind Toshinori's shadow and wisdom. After Katsuki, Toshinori didn't hire any one else to be his protégé.
He rolls to one side in his bed and huffs as he stares at the key. "What are you, DEKU?" and why does OFA sound familiar?
Oh, that's right. The dog. Toshinori used to have a dog, who for some wild reason, was named "All For One". The dog's collar had the initials "AFO" hanging on it. Toshinori had mentioned to Katsuki once that it was in memory of his son who he lost a long time ago. He said his son loved books and would love to have his own library someday.
Fuck. Katsuki catapults himself out of bed and grabs his laptop. He searches for "One For All"... and then just because he has good feeling about this, he adds the keyword "books".
Great... he gets the Three Musketeers books... and, wait. Hang on. The 5th result is a ... "Holy shit!" Katsuki stands up in excitement.
It's called "One For All Bookstore" and it's ... far away. But it's still in Japan, but it's in one of the southern-most islands of Japan, what the fuck.
Ahhh, fuck it. Katsuki needs to know. His master never does things without a reason. So he clearly planned for this happen. But why all the secrecy?
Because Katsuki has money and because his boss recently just passed away, he kinda has a lot of time to kill. He buys a ticket and goes to one of the islands in Okinawa, where OFA bookstore is located.
When he steps into the bookstore, tired and anxious, he immediately makes a beeline towards the information booth--
"Excuse me! Wipe your muddy feet, will you?" Someone apparently had the nerve to shout at Katsuki, the only living apprentice of Toshinori, who in the hell would have the audacity to--
Katsuki turns around, ready to shout back, but his breath is stolen away by this gorgeous, 'goodlordhowishereal', green-haired man. His cheeks are dusted with cute freckles and his eyes are so round and green.... his name tag says "I. Midoriya."