Tappei Nagatsuki (Re:Zero author) said:
"If Subaru landed in the world of KonoSuba, he would probably fall head over heels for Aqua right away. Because Subaru has the same taste as me, and I love Aqua"
There’s not enough people talking about how angsty this ship could be.
especially if you take account that aqua could probably see subaru’s miasma increasing every time he make a perfect counter plan,
I imagine episode 13 argument scene between them would be so much worse