Bresha Ruins Bresha Ruins is a location in Cocoon in " Final Fantasy XIII - 2 " , and a returning location from " Final Fantasy XIII " , although various changes have been made to the layout . Several aspects that are different include there being no crystallization on the landscape , the lake is no longer there , and so the ruins are just chunks of buildings from the Hanging Edge . Datalog . " During the catastrophe that befell Cocoon , the Bresha Ruins were the site of terrible casualties . The reason for this can be found in the Purge . " " The Purge was the name given to the mass deportation of Bodhum ' s residents . The fal ' Cie manipulated the actions of the Sanctum and the elite army known as PSICOM , sowing chaos and inciting conflict among Cocoon ' s populace . " " Many civilians fled to Lake Bresha and its ruins to escape the Purge , but a great majority were crushed by ancient structures that collapsed when Cocoon ' s momentum was suddenly halted . " " The Bresha Ruins are the remains of an ancient city that once stood on the shores of Lake Bresha , one of the eeriest sights on Cocoon . During the events of the Purge that immediately preceded the fall of Cocoon , a Pulse fal ' Cie turned the waters of the lake into crystal . " " Even burning flames became crystallized , creating spectacularly evocative and unusual landscapes . However , because the waters of the lake are now frozen solid , the famous fish restaurants that once dotted the shore are sadly no more . " Story . Serah Farron , Mog , and Noel Kreiss arrive in the Bresha Ruins at 5 AF through a Time Gate after departing from New Bodhum at 3 AF . Serah introduces Noel to Cocoon before a giant arm emerges from a nearby rift and attacks . Noel protects Serah from the towering opponent , and they take it on together until military airships arrive and destroy the beast for good . The travelers are taken into custody because they are civilians in an off - limits area . A few moments later , a woman called Alyssa Zaidelle , an Academy trainee , tells the soldier who guards the prisoners that they are special guests of the Academy , acting as observers . Alyssa tasks Serah , Mog , and Noel with defeating Atlas , who appears in the ruins because of a time paradox . They defeat a Cait Sith and Zwerg Scandroid , and recruit them into their party via the Paradigm Pack system , and Mog speaks for the first time , explaining Serah ' s ability to tame monsters . Alyssa informs the party that a device which appeared alongside Atlas has been detected . Near the device , Atlas takes them into a Temporal Rift , within which they resolve an anomaly to escape . The party uses the mysterious device to weaken Atlas and slay it by destroying the crystal atop its head returning the Bresha Ruins to their former glory . Noel approaches a gravestone and reads the epitaph dedicated to those ' cast out ' , which Serah explains must be a gravestone dedicated to the Purge victims . When Alyssa arrives at the Lamentable Rest , she searches the gravestone for her name , and is relieved to not find it . She reveals a friend of hers died in the Purge while she survived , and that ever since she ' s dreamt of dying , her soul raised from her dead body , and seen the aforementioned gravestone with her name on it . Noel says she seems real enough to him . Serah is wracked with guilt , believing the Purge was her fault for being made a l ' Cie five years ago . Fifteen years later , at 20 AF , someone from an unknown anti - Academy terrorist organization tampers with the device responsible for controlling Atlas and summons horde of monsters in the ruins . The Academy abandons the site and offers money for dealing with the monster - infestation and mercenaries occupy the area . The gil offer drives Mog who says he has lots of space in his pockets , but when questioned what he would use the money for , he claims to need money to decide . By traveling across the timeline Serah , Mog , and Noel find two passwords for the device . In year 100 AF they release Kalavinka that crossed through time , which they slay and free the Bresha Ruins from the monster - influx . By resolving the paradox , the party is given a toilet paper coupon , much to Mog ' s disdain . Areas . There are numerous changes to the original areas in the five years prior to the visit of Serah , Mog , and Noel , just as there are changes in the hundreds of years after . The Excavation Site is the same as the Forgotten Commons from " Final Fantasy XIII " , but in " Final Fantasy XIII - 2 " the south - eastern way has been " locked " by a wall , Atlas ' s hand protrudes from a deep gorge where the ruins of a fountain once lay , and there is a new tunnel in the north - eastern corner of the Excavation Site . Echoes of the Past is an area previously known as A City No Longer with several entrances to the tunnels ; in " Final Fantasy XIII " , A City No Longer had no indications of side entrances or tunnels , although it is possible the Academy made them to study the ruins ' depths . The Lamentable Rest area is the smallest area covered in tombstones and houses a memorial dedicated to Purge victims ; it resembles a part of the southern area of Echoes of the Past in the first game . There is no way to the northern parts of the old Echoes of the Past , as massive ruins block the passage . In " Final Fantasy XIII " , the Pulse Vestige housing the fal ' Cie Anima crashed into Lake Bresha ' s waters , and the resulting waves and spray crystallized as they formed . The lake cannot be visited " Final Fantasy XIII - 2 " , leaving no evidence of its current state . Creation and development . There were several different concepts of how the Bresha Ruins would appear in the game . In one of the concept artworks , Eden , the floating capital city of Cocoon , has collapsed into Lake Bresha that lies at the bottom of the crystallized Cocoon . The ruins of Bresha from 500 and 900 AF are also included within the artworks of " Final Fantasy XIII - 2 Ultimania Omega " . By the time ' s passing , the area wouldn ' t change that much , but in 900 AF , the ruins would have been completely submerged by the lake . Musical themes . At 5 AF and 100 AF , the Bresha Ruins has two main themes : " Unseen Intruder " and its remix , " Unseen Intruder - Aggressive Mix - " , the latter of which plays when monsters appear on the field . They are composed by Naoshi Mizuta , and in the Japanese version of the game , the songs are accompanied with vocals from singer Aimee Blackschleger . " Unseen Intruder " was the first song Mizuta wrote for " Final Fantasy XIII - 2 " , and that it is a vocal song with rap makes it a piece that reflects director Motomu Toriyama ' s desire to have a sound that ' s unlike the typical " Final Fantasy " title . The North American and European versions removed the vocal work making it a purely instrumental track and added some extra instruments during the main choruses of the original song . In the localized version of the theme ' s Aggressive Mix , one lyric is included : " Time traveler " . After Atlas is defeated , " Missing Link " becomes the new background theme . At 300 AF , the Bresha Ruins ' theme is " Full Speed Ahead " , a rearranged version of " Noel ' s Theme " . In one of early demos , the " New Bodhum " theme plays in the Bresha Ruins .