Fully agree with @Ramms_73's review. This is one of the new age Shoujos where random (mostly male) stranger characters are given incredible amounts of agency all to push forward the independent and strong female lead! Ugh. Here, just like in most of these cases, it is done by having her realize what she really wants by heavily engaging with another male cast member and really being talked into by a stranger that should never be allowed to give this important of advice. But she got there, I guess... From here it spirals into the most generic of its type. The stranger is let into her heartinstantly and incredibly deep at that- they seem to be just as important as the boyfriend even after only interacting ~twice. I would call it unhealthy but not rare at all, it is a staple of the aforementioned type of Shoujo.

Some emotionally cheating on her part? So open and spicy. Any interaction with another male cast member? Better compliment them and send super positive signals to make them fall, too! Neglecting the boyfriend? Willingly flirting along in front of her boyfriend to get stuff for free? She is in her right to do so, it is empowering and she is only teasing!! Him being not really jealous but actually irked by it but is not allowed exclaim it? Classic. Manly. Love to see him jelly uwu.

This all climaxes in the aforementioned agency given to the stranger being used as a tool to insta progress the female lead, possibly one of the worst ways to go about it IMO. It is pretty egregious and disgusting in this here case, tbh.
Her character is changed once and then twice to explain everything happening and it just as quickly, two chapters later, will be reversed again and be of no importance. Whatever. It is the usual case of FL being randomly declared braindead and put into a permanent state of being drunk to enable the stranger having this much impact and creating such a relationship with them- otherwise it could never happen simply due to her established character. This shit happens so often and I won't lie, it is as interesting as it is bizarre and dogshit.

I personally do not enjoy this type of Shoujo. The setup is cute and enjoyable and it gets better again in later chapters but what is shown in these ~5 chapters is a very particular style of storytelling. It is hard to put into words what it comes across at.
The best possible description I could come up with is that this is exactly how a hardcore radical feminist would write their female lead and story+boyfriend in tandem with her. Meh.

You were looking forward to a deep and complex work? Leave. You want a wholesome story with consistent characters that stay true to themselves until the end or at least act in a human way? Leave. You want a good Shoujo? Also leave.
Tbh, only stay if you have nothing better to do and are down to go through what is the worst kind of force changing a character to do some pretty cringe stuff to artificially "progress" something that could've been done as a main focus across 20+ very enjoyable chapters. It is weak to say the least.