These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Soul Nomad And The World Eaters
Alternate Character Interpretation: While Layna means well and is right about trying to fix the world, one could call her out on setting Revya up from the start without even asking until AFTER the fusion. One could say she had it coming in the Demon Path.
Crowning Moment of Heartwarming: The Demon Path is about the last place you might expect this, but if you lose the last battle of said path, you get the 'good' ending where Gig recovers from his brainwashing and returns to his duties as a Master of Death. The heroes seal Revya into the now empty Onyx Blade. Inside, your character meets... Danette, who decided to join your character, not wanting you to suffer alone despite everything you did, and then sings your character to sleep using a lullaby your character would sing to her when they were kids.
Thorndyke and Penn reuniting after he thought Penn died when he was just a toddler. Also counts as a Tear Jerker. Penn showing that he's more mature than you think when he decides not to live with his dad because he didn't want to ruin his little brother's future and he was happy with the Nereids... Just plain touching.
The Levin ending. Either gender is considered one, but female Revya's Levin ending deserves special mention, especially when she sees a pretty flower and Levin tries to say that it's nowhere near as pretty as her, but can't exactly get the words out. Awwwww...
Fridge Brilliance: If there was any doubt that Gesthal and Median are the same people, check out their moves: though rearranged, all of Median's attacks work the same as Gestahl: Hitting the row, column, or the entire party. And their skills are the same, just named differently; Median's being around his royalty, and Gesthal's being about revenge.
Fridge Horror: So, while playing the game, you have heard about Crimson Tears and seen them a bit often. Then at some point, you learn that by giving up their life, Danette's parents become those to save her. While that is fine by itself, when you add up that to the other stuff that happens... Did Thuris get his many, many Crimson Tears from his fanatical followers who would gladly give their lives? And it's mentioned that it cost a lot to have a Crimson Tear made. And Yesterwind, sells a lot of children and Orviska is their best buyer. And coincidentally, the real Dio has Crimson Tears as well. The more you think about it, the less you wonder why they have such a bad reputation.
Also, Hades' Despair rooms; their Outer Limit decor not only negates the penalty for having low stamina — one of the game's primary limiting mechanics — but causes you to gain a percentage to your stats equal to the percentage of stamina you've lost. Typical decors give you a 20% stat bonus in exchange for a hefty drawback; Hades' Despair gives you a bonus that can approach 100%, with additional advantages, letting you easily curbstomp otherwise equal groups. Oh, and it makes it so you die if your stamina ever reaches 0, but that's easy to avoid.
Jerkass Woobie: Though she never reveals her past to anyone but Trish, Shauna's past sucked. Having her home hit with the game's equivalent to The Plague, villagers breaking in to her home, separated from her family and caretaker, forcing herself to fend for herself at a very young age. Of course, she'd probably kick your ass if you try to give her a hug, unless you're Trish.
Les Yay: Danette and Revya in Danette's ending, assuming Revya is female.
Moral Event Horizon: The Demon Path as a whole for Revya, starting with killing Layna and everyone in his/her village.
Thuris the Scarlet Iago. He had no reason for this, he just wanted to kill people.
Kanan butchering the village of Pulkina (and Danette's parents) in the name of Thuris.
Drazil's plan. He tricked Median into killing Vigilance. But then he decides having souls flow into his world wasn't enough, so he sends Gig and the World Eaters to kill everything on Heaphness, and just to recap, this guy turn Gig into the Ax Crazy nut he is at the start of the game and created Thuris.
One-Scene Wonder: When prompted to choose a title in the Demon Path, choose the second choice. Enter the voice of Laharl, which berates you for taking the title of an Overlord lightly and complains that he went through so much abuse for it, and disappears. Gig and Revya think they're hearing things, and no ever speaks of it again. The moment is one of the most famous in the game.
Viewer Gender Confusion: Kanan. An unusual case, everyone refers to him with female pronouns and he has the same class as all female Dracons. Basically, it's not just the viewers are confused about this one.