If you love fast paced narratives, this is the book for you. It's a brilliant interweaving of gritty city life and time travel meta and never had a dull moment! The writing style and the plot itself were especially well-structured, and the way the two timelines intersected was just beautiful. I couldn't stop flipping to the next page with the way Fadugba wrote cliffhangers and just the worlds in general. Both Esso and Rhia's first-person narratives really got across their different personalities and I loved seeing all of the slang they used, their questionable decisions, etc. Though I didn't know what was going on with the football references, their points get across-- I think older people might have more difficulties with reading the slang, because I had some trouble deciphering London slang and I'm a teenager myself, but it shouldn't be too hard. The teenagers were immensely teenager-like, the threats of peer pressure are real, and nobody knows what's going on! Furthermore, I do not nor have I ever lived in London myself, but the book really highlighted the real struggles and obstacles of many who live there while delivering a dramatic and fantastical plot. It gives such an engrossing view of British street culture, and is really like a contemporary book about being young, poor, and Black in Peckham alongside realistic worldbuilding about the future. Also, neither have I puzzled over time travel theories, but all of the science and physics were very easy to understand for laymen and incredibly educational. Many time travel plots are needlessly complicated, but not this one-- you can clearly see Esso and Rhia hurtling towards their moment, and this moment is executed flawlessly. The book was just so original and strange in a good way. It's apparently getting a Netflix adaptation, and I'm looking forward to it!