Flash of Sorrow
Decil duels with Flit again and calls in his secret weapon, Flit's capture friend Yurin L'Ciel. She is forced by Decil to fight Flit as simply tool to defeat him. In course of the duel, she is killed by Decil, which enrages Flit. Using his X-Rounder abilities, Flit soon disables Decil's Mobile Suit and leaves him drift in space. However Flit is emotionally distraught from Yuril's death, making him feel emotionless. Flit is soon called by Diva to lead the way the pave into the Fortress's drydock. Flit with reckless abandon, he forces his way into the Fortress. His efforts allowes the Diva to dock and embark its ground forces into it. Flit returns to the Diva and quickly refits the Gundam to AGE-1 Normal configuration, then accompanies the boarding crew while not replying to anyone communications.
Aired 15/01/2012EP 14 - Flash of Sorrow

Mobile Suit Gundam AGE
In A.G. 101 (the 101st year of the Advanced Generation calendar) a mysterious entity known only as "UE", or "unknown enemy", attacks and destroys the space colony Angel. This brutal attack becomes infamous as the "The Day the Angel Fell", and marks the beginning of humanity's war for survival.
The series begins in A.G. 108 when the UE attack the space colony Ovan, where Flit Asuno lives with his mother. Flit's mother is killed by the UE, and in her belongings (in an object called a "AGE Device") he discovers the blueprints for a powerful weapon from the past - the ancient messiah named "Gundam."
From these blueprints, Flit spends the next several years studying engineering at an Earth Federation base on the Nora space colony and designing the AGE-1 Gundam. Seven years later, in A.G. 115, Flit completes the Gundam, just as the UE attack Nora. Flit and his lineage's battle piloting the AGE-1 to protect mankind is about to begin.
(Source: GoodAnime.net)