Is it this one you're thinking about? https://myreadingmanga.info/maine-unap-control-attack-titan-dj-eng/
Yes. I feel like this here is part 1, your link part 2 and this https://myreadingmanga.info/unap-maine-uncontrol-shingeki-no-kyojin-dj-cn/ might be part 3 xD
But I think "part 1" is a different author?
Anyway would love to read part 3 in english as well :)
This manga has nothing to do with the linked ones.
I knew. But still. It feels and it reads itself like a continuation :)
Isn't there a part 2? Or was that a different story with Eren x Levi being Alpha and Omega? Both grown up. I think Eren is a waiter... Levi as welll maybe. It was a raw, so I could just guess what was happening.