Ahh, I love this manga! It's so refreshing to find one about an established couple, who are adults, without a bunch of tension. 'new love w/ drama' is okay sometimes, too but. I really adore this every day kind of sweetness.
Also on pranks I don't think I'd ever try to scare my partner... but I do send them photos of me eating a bellpepper like it was an apple because I know it drives them crazy. Just sometimes.