Spy x Family, Vol. 5 by Tatsuya Endo

Anya Forger has been trying her best to befriend Damian Desmond, the son of the powerful Ostanian political leader Donovan Desmond, but her attempts have been constantly rebuffed. Despite the setbacks, Anya is determined to gain access to the Desmonds’ inner circle and even devises a new plan—acing her midterm exams to earn stella stars! Can the academically challenged Anya pull off this feat for the sake of world peace? -- VIZ Media

Anya still tries her best, both socially and academically, for a mission she doesn't fully understands, because she is a small child. She is such a sweetheart. Also, to be fair, she isn't the only one who doesn't have the full picture, so that's good.
I especially liked her bonding with Yuri.

Little by little, we are also introduced to more characters. This manga is relatively small in scope when it comes to characters and settings and the characters are added slowly. It's a nice change of pace. I like busy stories, sure, but this isn't one of those. A bunch of action, but also things don't happen all at once.
The new person is another spy, a lady taught by Loid, who is in love with him and wants to become his wife. So look out, Yor.
Talking about Yor, I just love the fact that the time she is actually doing a perfectly innocent thing, cooking, and suddenly Loid is getting suspicious of what the hell is going on with her. The irony.