Even though I've rated and reviewed all individual books， I thought I'd also review the entire series as a whole。 Overall， I also feel like it was a bit unnecessary to begin with but still enjoyable and it was great to return to Percy's world even though we didn't get to see as much of him as I would have liked to （tho I understand poor Percy has already been through enough as it is）。It started out kinda meh with Apollo being a bit insufferable but his character development was honestly one of t Even though I've rated and reviewed all individual books， I thought I'd also review the entire series as a whole。 Overall， I also feel like it was a bit unnecessary to begin with but still enjoyable and it was great to return to Percy's world even though we didn't get to see as much of him as I would have liked to （tho I understand poor Percy has already been through enough as it is）。It started out kinda meh with Apollo being a bit insufferable but his character development was honestly one of the best things in the series and I loved every single haiku （which wow impressive）。 I also really appreciated Meg as a character， she was so 3 dimensional， I loved to see her battle her demons both in and out。 A few things that annoyed me about the book: 1） Estelle has Percy's eyes， which he's meant to have gotten from Poseidon， his dad。 Estelle's dad is Paul Blofis so this genetic plot-hole for some reason angered me quite a lot。 2） Book 1 is at CHB and NY。 Book 5 also happened at CHB and NY， however， the demigods mentioned in Book 1 aka Paolo and co。 are not mentioned at all in Book 5。 What happened to them？ Did they die？ Do they only stay at camp in the winter？ Seems more like a forgotten string on part of Rick。The entire series was also very predictable。 I remember in PJO and HOO the prophecies always had a plot twist and almost never meant what the demigods thought it meant， whereas in TOA the prophecies were always pretty easy to decipher and figure out， which was a bit disappointing ngl。Overall， I enjoyed them and I appreciate what Rick did but PJO will forever be the best of the best。 。。。more