I dont mind aquarium date, but - this is so cliche in manga nowadays, really tiresome already - every.single.romantic.manga. Cmon. Shop date, amusement park date, aquarium date. Japaneese people have no fantasy at all? By now even homedate playing video games is even more refreshing then this
Sweet.
Glad he didn't back out for her, I mean its a valid excuse since the sister is sick, but I'm glad he thought that maybe she'd want to have someone to walk around with at the aquarium.