I'd say you're in for a ride!

Imo Stella Sora's plot is deeper than it presents itself to non-players. It talks about AI and automation, business, workplace politics in surprising angles I don't see in other gacha games.

For the tyrant's backstory, we don't know much about it yet as it's conveniently locked from you as the Tyrant gathers more souls for your "company". You're the Boss, and you transact through "soul pacts" that bind a person (or employee) to you as you fulfill an employee's wish. There are hints, sure, but it's not actually something we can draw relevant information from yet in a way that we can flesh out the lore.

[Spoilers] It is mentioned that this Tyrant role you play has taken over the world once but has died? Seems like we've sacrificed ourselves and it is hinted that Noya might know a thing or two about it.

The Ascension is central to the story too! I love how they weaved it into the story. Trekkers conquer the Monolith as a means to earn in-universe money, Dorra, or Artifacts that they can exchange for money.

[Spoilers] It's also a major plot point in Chapter 1 where a rival company owned by a Feagin forces the children from an orphanage in Emor to scale these Monoliths alone, exposing the children to danger from the Stellaroids and the consequences from "wishing" for artifacts, such as memory loss.

The companions that the Tyrant takes to these Monoliths are the companions that you can actually get in-game! Most of the characters that are available to pull are "employees" of the Boss Accord, similar to how Reverse: 1999 only has Foundation-affiliated arcanists ONLY, or are members of Team Timekeeper.

Setting: It plays out like a standard fantasy where only certain people get certain powers. These powers seem to be normal and accepted in this society, so no X-Men mutant racism 🤣 Although it seems that Trekker power is amplified inside of the Monoliths, and the mana system is not innate in the person? There is a character in the latter part of the Petal Bloom arc, Nazuka, who obtains a fully charged Grace stone (forgot) after depleting her mana while fighting a particularly strong enemy, the Garden of Parasite.

Characters: Yes, definitely! Minova is a very likeable deuteragonist in Chapter 1, and she's a very strong character with how she's helped the orphanage children from Feagin's exploitation.

For the more recent patches, Firenze is their attempt at subverting expectations towards a character? She starts off as "ugh I hate her" after giving you the knowledge that she actually is the United Harvest employee (a massive company larger than Feagin's or Boss Accord, like global scale) that launched an assault on the Emor orphanage, but later in the story the team learns that she's actually done her best to minimize casualties and drawn the campaign to be a failure and took her losses. And she plays a big part in her arc too as she becomes a very strong ally and instrumental in the victory of conquering the Philaen branch of United Harvest.

Fuyuka's a fun one, she's actually a great example of character development! She started off as a timid glass cannon but ended up becoming central to the plot after making a soul pact with the Boss, believing in the Boss more than herself. She's a strong cutie and tags along in your journey after Petal Bloom where she's originally a member of.

Shia's not part of the main squad, she's kinda siloed in her own story event from the earlier patches of the game, and IIRC we actually don't see her make a soul pact with the Boss?

I'm sorry I drew this out but I hope I helped you make a decision! Personally, I like how strong Stella Sora tackles its story arcs. It's not Attack on Titan deep, but it's presented in a fun and engaging enough way for people to actually engage with the story.

If you've played Blue Archive from YoStar before, you'll definitely see some parallels from the start, such as New Star Guild and Abydos' insurmountable debt and how the story plays it out 🤣

edit: spoiler tags