That Time I Got Reincarnated as a Slime: Tensei shitara Slime datta Ken

[Kraco]

Ains wasn't established to be the strongest being in the world by episode 4 either - just very strong.
In fact, in Season 1 it looked like his minions were actually stronger than him and it was suggested that he himself wasn't really one of the strongest players.

I don't know what gave you that impession. He defeated Shalltear without using his real battle equipment at all. He was also the leader of a PK guild, with plenty of experience under his own belt. There probably were some directly stronger players around, those who had built more pure battle characters. But if Ains was given time to prepare, he probably could have fought anyone.

Another OP Isekai Player character.

Because this falls in the instantly OP category of isekai series. I'd dare say of the modern isekai stories, that's the bigger category, not the one where the MC takes a long time to grind up to power. I count the cheat power/skill stories to belong to the OP category, even if the MC was at first seemingly weak. But the OP skill, which is usually analyse/steal enemy skills, makes their progress F1 fast.

And honestly, the Slime is basically on the same level already. He devoured one of the 4(?) dragons which are obviously some of the strongest beeings, if not the strongest beeings in that world in episode 1. Barrier aside, as if that is not telling enough already.

Veldora cooperated with Rimuru. I doubt Rimuru would have otherwise been able to store Veldora away. For that's what he did. He's merely keeping Veldora safe, not digesting him.

Anyway, the fear of something stopping Ains and his plans stopped being relevant in season 2. Which is exactly what I fear will happen to this anime too.

When you have an OP main character, you can't write a traditional story.