Ending sure was anticlimatic and abrupt. I think the story pacing went haywire shortly after the episode when Min ended their pretend relationships. Some things should have gotten more screen-time not to feel rushed. For example, Seyun and Yuna's dating probably should have been shown more(perhaps with Yuna actually trying it seriously), with both characters somehow progressing with it, because as it was it Seyun's character was just abruptly thrown away and didn't get any closure. Also, Min's struggles after break up with professor were almost nonexistent. And it was a good chance to show both Yuna and Min actually contemplating mistakes they did and taking a new stance in regards to love and relationships. That opprtunity for characters growth feels wasted. And lastly, Min finding Yuna in the span of one chapter was unnatural, i think there were many ways to extend it, up to and including Min's possible visit to Yuna's parents.
All in all, story was good, but for some reason author went with an unnecessary swift ending, which leaves you with "Huh, so that was the end?".
Why is Jiwon thinking "we're just friends"? Previously, she asked her brother's girlfriend about what has changed since they started dating and got the answer about them being friends, who just fool around with each other. Later, she said she wanted to be such "special friends" with Myeongin. It was her notion of romantic relationships, wasn't it? So why did it regress to "just friends"? What's with the sudden downgrade?
Translator probably misunderstood. Jinhwa's mother is her biological parent, and Jinhwa called her "stepmother" in a sarcastic way to compare her with cruel stepmothers from fairy tales, who force their daughters to work(get up and go to school in her case). So, if no weird plot twists occur, Jinhwa is not adopted and has no stepmother.
There really is no villain(except for the cucumber man) in this story. But personally I find Yuna the most likable out of the three. She is simply naive and eager in her feelings, and though she tries some lame trickery and plots to get her relationships going, she ultimately is unable to do something cruel. So, apart from her narcissistic problems, she is not a bad person.
Professor's situation is partly understandable. She went along with her feelings and didn't think of what happens next. She is scared of scandals that are prone to happen if someone finds out she dates her student(I believe that's the main issue here, that student being a girld doesn't help either). Her fear is not unbased, as it can probably severly affect her life to the point of being fired. But she is too indecisive, she is not willing to take everything seriously, how will relationships progress, will she change her job or Min will change her course, or whatever. She should have thought about it.
I think Min is less likable and is considerably guilty in creating this whole mess. She is impulsive and doesn't really think of consequences. It feels like she, unable to date normally with professor, compensates it with Yuna, doing all those lovey-dovey stuff she did at the beginning. She once said professor was giving her mixed signals, but then she gave those signals to Yuna. Using words from some song, her oaths betray each other till there's nothing left to keep.
Dunno about guy who couldn't protect anything giving others power to protect, like maybe there is someone with better qualifications for that.
On side note, what was that messy backstory, aren't his lives supposed to be the strongest in their respective fields? Then what was that Gdansk/Danzig's forte, inability to protect?
It's obvious, by closing her eyes while swallowing the bead, Jinhwa has gained the ultimate understanding of yuri.
In all seriousness though, she most likely has gained the knowledge about herself aka her past life/lives.