
May contain spoiler?only a theory tho
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They all time traveled.
First future Ml point of view: The Mc Dies while Ml couldn't protect.
Second Mc point of view:The Ml succeeded but dies while the Mc lives.
but Ml doesn't remember some future,only feeling deja vu
So maybe this is all their third chance
Besides Ml kinda knows the new student which the new student knows about the clock guy while he also knows the Ml so now his guiding( or not) the Mc ( ̄∇ ̄")again only a theory...

That rlly reminds me of kagerou days or heat haze days!!!!!! The little boy and girls story!!!! ╥﹏╥
Spoiler for the anime/manga/music project Kagerou days, though ive only ever listened to the music so mite get a few things wrong
where they both go back in time trying to save each other but end up in a loop dying for each other and never end up getting to live together in the same reality, super sad stuff

It was literally good but everything was starting to go like nahhh..I'm literally doubting the first prince because I only see him as someone using Iris as a chess piece to become king and for the revenge( ̄へ ̄)and as for the Queen Dowager all I got to say is she's also strange very very strange...I feel sorry for Iris that she's being treated like an object for the royal family(╯°Д °)╯╧ I may come back and read this again in the future...

I get what you mean but it's not true. I am reading the novel so I can tell you somethings are different in the manga. But Dean/Alfred is always helping Iris from the shadows and sometimes outright.
Queen Dowager wanted Mellice as her daughter in law but respected Mellice's wishes that she loved Duke Armelia. When Iris was born Queen Dowager decided to have Iris as Grand-daughter in law. Her intentions towards Iris are positive. Personally I think the Church arc is okay bthe story afterwards gets interesting.

https://www.novelupdates.com/series/common-sense-of-a-dukes-daughter/
There is a prequel as well. Common Sense of a warrior. It's Mellice's story. I haven't read it yet but it seems interesting so I have bookmarked it since it doesn't have many translated chapters.
Ain't he just extremely possessive and slightly yandare? 'Cuz he fell so hard for the FL' s beauty╮( ̄▽ ̄)╭ probably why he was angry when FL won't submit under him on their second life...hayzz both are stubborn to achive something...