It's alright, but it really starts to lose steam after a while. Then it turns out the Door of Truth holds no real meaning or value. It's a very "the real treasure was the friends wife we made along the way" type of ending.
It's cute, it's fluffy, it just isn't anything really deeper or more meaningful than that. And it just hits every cliche with absolutely no real tension. You can see every story beat coming a mile away. If anything, it's actually really uncomfortable how 'in their business' nearly every single side character is in this manga. Like... they're literally all there just to try and force the main couple together. The extent of their character, development, and motivation is "I really want these two girls to get married" which is like... idk it's just really invasive and weird if you don't suspend disbelief.
All around, it's like, a 6.5? It's coherent if simple, it actually manages to wrap up, and the art is good. Cute girls kiss, cute girls blush (hard, the blushing is cuter than the kissing here imo), it's pleasant.