I think that Ramiro has the cutest, but worst backstory in the history of cute yet terrible backstories.
He was born on 11:59 on August 31, 2000 making him eligible to be in his grade/year group by a minute, causing him to be the youngest of all the characters. He is also the youngest of five brothers who beat him up and one sister, who called him on his 16th birthday and has been I prison in Chile his whole life. His parents barely know he exists and are rarely ever home. When he was younger, he used to listen to them fight which causes him now to still sleep with his bear and blanket. His sister is the most important thing in his life and he's never experienced love.
So, that's Ramiro's adorable and saddening backstory.