Ster can mean Star in Dutch so it's basically the same, just different. Could be a typo. Don't know about other languages with Ster as Star.
My guess is a typo since the latter page says star.
Also this was confusing to read, what was happening?

last edited at May 31, 2017 4:36PM

There will be more chapters? Wonderful.

I cry every time

Honoka said 'tatas' I'm so done

Morinaga never disappoints

Ah, blessed with an update. Really love this manwha, honestly

Top Akko continues, I aprove.

The only reason I knew it wasn't Umi is because her chest isn't that neat

Saw this one on tumblr, wanted to request it but looks like someone did it before me, I love it.

I am all in for DiaKanan.

The young ones with their stamina.

Glorious, thanks for translating and uploading.

Every time I see Riko and Yoshiko, I think back to the game where Riko dissed Yoshiko. Wonderful ship.

Wat

Are they standing or laying down? Because either way my leg would be so soar after.

Good Umi, lovely scribbles from Maki and Nico, wonderful expressions; 10/10.

Wonderful, really liked it.
But I can't read this without having the text sound like their voices in the anime

Still one of my favourite NicoMaki doujins.

Didn't expect a third, nice.
Am I insane for enjoying this a lot?

In my eyes the dude was thrown in to make it seem less gay. Plenty of yuri scenes. Shame that she ended up with a dude with lack of character.

That was wild. Would've been funny if they flew off with their brooms in the end.

I didn't expect this to be so... Skin clearing, such pureness.

This is it, the polyamory series that really makes me smile.

It has been 100 years-
No just kidding, glad to see a tiny update.

I always imagine Diana being the ultimate bottom so this is a nice change.