"I feel like I've gotten used to her impulses..."
If there's anyone who can take it, it's Wakana. Some other dudes who'd like Marin only for her looks would've noped out quick with her headstrong, impulsive personality. Especially since she's absolutely not the easy gyaru they think she is.
"We've been in the same world this entire time!" "If our worlds were completely different, we never would've met!"
Beautiful. If there's even a message to this entire manga, this can be it.
Sad that it's ending soon after they got together, but if Fukuda-sensei is already struggling to write (health issues, and perhaps writer's block) then it's a wrap. Maybe we can have a time skip sequel or something in the future if she's inspired to do one.