Imagine the Sakamakis going shopping.
Reiji would try to keep everyone from getting lost and would try to get all the things they need. And then he would also have to try to stop everyone from buying everything and anything they wanted.
Ayato would would just randomly wander around, looking at random things in the store. He would end up accidentally breaking something, and Reiji would get seriously pissed off at him.
Laito would sit on a bench, checking out every girl that walked by. Sometimes he would wander around with Ayato. Then, he would go 'help' Reiji. Really, he would just stuff random items in the cart (leeks, whipped cream, toothpaste, stuffed animals, dog biscuits, pillows).
Kanato would put lots of sweets in the cart. Cakes, pies, candy bars, syrup, soda. But mostly cake.
Shu would go into the section of the store that sells beds and bed sheets. He would lie on one of the displays and take a nap, or he would browse the music/CD section of the store.
Subaru would go along with Reiji and help him so they could go home sooner. He would probably just want to get back home to his roses.
