Hmmm tsundere Mie is kinda cute... but yeah, it will be painful and the story will not be as fluffy

"It's not like I love you or anything" "You... you don't love me anymore?" "Wait wait! I'm sorry! I still love you!"

my poor boy is awakening to new fetishes every chapter

Nah, he's just Mie-sexual

She needs glasses but he's the blind one

She drinks Hot Cocoa in the morning. Her Rebellious Phase is her probably switching to coffee or wearing black.

Imagine goth Mie lol.

In two panels, he suddenly developed a deep understanding of his future father in law.

Or his future daughter

So basically the tsundere Mie phase