「Granblue Fantasy」Leviathan Mare Omega solo

First day of Leviathan and Yggdrasil, not bad at all. These 2 definitely feel better to fight than Celeste and Colossus for sure.
Character like Lennah really help against Leviathan. He inflicts a special debuff stack when he attack. The more stacks you have the more chance you couldn't attack. Also when you get to 4 stacks then that character just die.
Luckily said debuff can be cleansed, this is why Lennah is so good. Satyr won't work as well for this one.
As for Leviathan's gimmick, you need a chain burst of 3 or 6 damaging skills per turn to reduce his buff. You will need chain burst of 4 to disable his reflect debuff anyway so keep that in mind.
With proper defensive characters it's not a bad fight. Pretty fun if I may say so. Shieldsworn is perfect for this fight but you need to manage your CA well.