helppppppp

i forgot the title of all these manga and been tryna search them in my mangago list but can't find

(1) the fl is a saint in secret open a book cafe then the ml really like book and went there become regular they got married the sheild saint?

(2) this gonna be very vague cause i remember they are 2 significant male character one of them is a jeweler talk about ruby

(3) this gonna be more vague alien something i think the title, dad die main character kinda sad and depressed then they realise that there dad did not die as ordinary officers but as an alien cather or something

i feel like the num 2 one is like a fever dream legit cannot find em please helpppp