Brilliant Covenant

Brilliant Covenant is a Flagship Battleship used by Mushoku Kika under contract with Otto.

Story

Otto took to Eden to investigate. Under ELLA's authority, Otto searched the terminal's server for many messages. Including the origin of the ELLA terminal, the information of Dr. MEI, and the related information of the Stigmata Project, Kika also knew the content of the Stigmata Project. After getting the information he wanted, Otto began to prepare to retreat and set about preparing for the development of a new system. However, ELLA had already learned the truth about the Worm Queen Project, and she couldn't accept the fact that the system fell into chaos, and eventually ceased functioning under Kika's attack.

Otto used the technology discovered in Eden to create Brilliant Covenant, and Kika became the Valkyrie who control the battleship using Nexus system because of its excellent Houkai adaptability. After Otto discovered the action of Cecilia Schariac and others to resurrect the Herrscher, he ordered Kika to destroy St. Freya Academy. The first main gun shot was blocked by Houraiji Kyuusyou, and the second one made Cecilia disappeared into the subspace.

Sangharama Fantasy Sea

While exploring the Sangharama ruins, Kika used the Brilliant Covenant to blast open the outer shell of Sangharama Fortress and explore the interior together with Otto, but even Kika's full attack failed to open the last door of Sangharama Fortress. At this time Maria Schariac sent a report that the Schicksal forces wouldn't last long with a single attack, and Otto and others had no choice but to retreat temporarily.

Ark Fortress attack

When Schicksal raids the Anti-Entropy's Ark Fortress, Kika tried to bombard the Ark Fortress with the Brilliant Covenant, but was shot down by the God of War. When the God of War was about to make the final attack to the fallen Brilliant Covenant, Kallen, promptly used the "Judas's Verdict" to weaken the God of War, and finally kept Brilliant Covenant and Kika temporarily retreated.

After the Ark Fortress raid, Mushoku Kika has been in a coma for nearly a week due to excessive use of the Nexus system, the contract between Otto and Kika is fulfilled and Brilliant Covenant was sent to St. Luther Academy for post-war repair.