Kazuki scratched Soushi's eye out because Soushi was depressed at fuck over being the only one to know the truth of the world as a kid and tried to assimilate Kazuki.
Everyone who participates in RoL mission dies.
Karin dies unable to reach her Fafner at the start of the series along with Michio's mom.
Shoko dies blowing herself up.
Koyo is assimilated by the Festum but retains some self of his self, protect the island at the end of DA as a Festum and then again in HAE having become the core of his Fafner.
Sakura suffers a severe assimilation phenomenon but recovers.
Kazuki's Mom is the basis of a Master Type Festum called Mjlonir who provides information that ends up helping the island stave off the assimilation phenomenon. She dies keeping the Island's Core alive in HaE.
Mamoru dies protecting the island from a new type of Festum after Kazuki suffers a severe assimilation attack.
Michio dies after getting Yumiko pregnant when he tries to destroy the Mark Nicht with Fenrir only to have his escape pod slam dunked back into his machine.
Soushi is assimilation by the Festum but is able to maintain his consciousness with the help of a festum named Misao who fuses with a fragment of Polarsis which was dying after taking a nuke strike from the NUNs.
Tsubaki is Soushi's sister who was made into the island's core after her mother was assimilated who dies at the end of DA to help teach the Island's Mir the meaning of life and death. She has a daughter named Orihime.
A large number of the Alvis staff gets killed towards the end of the series by a Festum Invasion including, Mamoru's Mom, Kenji's Mom and the majority of the hanger staff.
Hiroto gets killed by Nuns when he mistakenly thinks they've come to help fight off Festum.
Canon dies from assimilation phenomenon and it's very sad.
