It was a pretty average Spring in London by all accounts, when I stayed with Guatemalan Luis Barrueto at his Holloway flat in late-April, 2015. For the few days I was there we did all the things 20-somethings should do while studying abroad; stayed up late, partied, saw the sights and attended street festivals. But for all my hedonistic London encounters, something much more important was going on for Luis.