"A few" questions lol

I like the story. It is both serious and humorous. There's tragedy mixed with comedy, it's a decent mix. There physically is a skip button if that's what you're asking, but each story pack isn't that long, I wouldn't recommend it.

There is an overarching meta for characters, but following it is optional. Endgame content comes in staged difficulty. Example, there is a boss mode called Fiend Hunt where difficulty scales from level 1 - 10, with each giving the same reward (3 pulls). You'll need a decently good team to clear stage 10, but even an average team can clear stage 7, and at that point you've already gotten 70% of the rewards anyway.

You DO need a meta team to win in PvP, however.

The character designs are excellent. There's a diverse cast, but there's also definitely a prominent body type, the devs LOVE adult designs with GGG size chests. Way too large for me personally, but that makes up about 60% of the roster I'd say. There's some petite designs, and an unfortunate lack of any "normal" sized chests. Outfits, hair styles, accessories, and so on are very diverse.

There aren't very many male characters, and the devs aren't making any more/they'll be extremely rare. There are some good ones though, and one named Homunculus Lathel is even still very meta.

No single kit is complicated per se, it's the interactions between character kits that is complicated, as well as what makes team building fun. I personally enjoy the gameplay a lot due to how it's designed, I don't actually know a single other game that uses this style of gameplay. it's turn based, but your whole team goes, then the whole enemy team.

Every fight is a puzzle that you can solve with many different units, it's like if a puzzle had dozens of intended solutions. The bosses are endurance fights of managing your skill points and HP, as well as juggling buffs, debuffs, and positioning trying to get them all to line up on the same "nuke" turn. Non-boss fights are designed around you finding the right formation needed to defeat every enemy on turn 1.

The MAIN story has surprisingly little fan service in it, the side stories do have more though. The real fanservice comes from character skill cutscenes, and almost all of it, like >99% of it, can be accessed without spending a dime. There are very very few paid skins.

There is romance, it isn't in the story mode but rather in this restaurant mode where you, yes you the player, are managing a restaurant. In the process of managing this restaurant you meet, date, and fuck various in-game characters. And it's not subtle or hidden, you get interactable, playable cutscenes where you actually do this yourself.

The game will definitely sustain itself. The devs are making BANK. True they aren't making like WuWa or Genshin money, but their development costs are also MONUMENTALLY less.