
Spoilers
ML claims he has cancelled his engagement with the airhead attention enjoyer diva who spent most of her times at parties and entertaining multiple men flirting with her. ML also promised the heroine that he'll make her chose him.
A couple of chapters later, when the Diva arrives he does not kept his distances when she runs to him, hug him and stayed glued to his arm (literally). Ik it's stupid to apply real life common sense and real life aristocrats logic in a manga set in a fantasy world but, still even if the Diva must be respected etc, both of them are unmarried. That closeness is very diring to see.
Now that I think about it I guess this is why many songstress left the temple... they didn't like the Diva's complete disregard of social normal and well her reputation of endulging in luxuries, men and etc is ruining the Diva's role and consequencesly their role too since their her accompanists.
Anyways him endulging in the Diva's flirtiness and having her glue 24/7 to his arm in front of the woman (MC) he was supposed to win over is a very BRUH moment. How clueless can you be.

Another spoiler
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The Diva is actually doing a horrible job as a Diva. She completely live in her delulu bubble where the reality is that she's in the central of everyone's life. She does not care for the people. At all.
I haven't read chapter 17 but from the previous seems like the other songstresses under the Diva experienced having their carriage break and walk by foot or horse during a storm that lasted for days. The Diva and the appointed next high priest have no care of what these poor girls and knights suffered when they made their way to ML's country. The Diva is supposed to lead the other songstresses and are supposed to be a group. A team that works together. But the airhead Diva seems to think it's a soloist and her servants relationship instead. In fact the airhead seems to not even want to be with the other songstresses at all.
Also the next high priest is super sus. Idk I get a terrible gut feeling that he'll squeeze all of Arietty(MC) hard work and credit the airhead Diva of MC's work.

If the crown Prince hurt MC(ines) to get back/hurt the ML in what is implied a second timeline (where the Prince is another time traveller/reincarnated who in his original timeline, saw MC and ML marry before), why does he told the guards to not kill MC when she attacked him in the timeline where the Prince and MC were married?
The Prince did mention she doesn't love MC but just liked to torment her and parade her butchered mentally and physically to ml. So why does he stop the guards from killing her?
Was it because he wanted to prolong her suffering further?
Ok wild theory: was MC and ML ended together in a previous timeline where they somehow ruins the life of the Prince who was forced kill themselves? So he got his memory of his past life and when reincarnated he made sure to "pick the right choice" (he said this in the webtoon) and married mc. But his hatred for both MC and ML both resulted in him tormenting the two as an act of revenge?

In the old comments here someone shared a site name (Anna's archive I think) there you can download the novels tho I'm not sure if they're completed... Currently in that site there's 4 volumes. Vol. 4 last chapter starts with Ines metting Càrcel's mum which happens in the middle the webtoon chapters right now.
P. S. I didn't read the novel. I just downloaded the last vol (4) on that site to see spoilers and y'know know where the webtoon is in the novel. A bit disappointed that the last chapters/vol aren't in the site

"Other people are suffering more than you so you aren't allowed to hurt and cry because you should be grateful. And you don't have it has hard of the people living in the street, are in war and dying from starvation". Yeah, genius. Of course people living in these dire condition had it worst than any one the can live without worrying about food, safety and a roof in their head. But, this shouldn't be used to invalid people's feelings and pain.
I hate Shuli's mum

Does him saving her from her toxic family justify and erase the douchebag he's been in the present?? Happy that he saved her in the past but, gratitude shouldn't be used to close an eye and ears of what kind of man he has become.
It's the same concept of when you have an abusive parents but, you can't let go of them because when you were tiny they had been nice

Writing directly to the author and sending them emails, is that a thing???? I've read plenty of books and novel myself but, apart from their socials, I've never seen authors share their emails too. Is this thing common in Korean webnovels?

Probably it's an e-mail specific for that rather than the author's *personal* e-mail, meant to be used like one would a social media account. I've seen a lot of authors (manga and webtoons alike) that have shared a e-mail address to receive fanmail. I'm not sure how common it is for them to respond to it but my guess is it'd be like seeing an eastern author reply to a tweet sometimes or smth?
Though all in all it's becoming less frequent lately
So many rejected FL in other stories deserve these super empathetic people. Bob hair girl and her fiancé are wrecking hilariously the situation but let's get real, noble girls stories never have these kind of characters. Y'know noble characters that step up in defence of a fellow woman being humiliated and have her heart broken. Usually side characters on the nobility side laughs at others misery