I love every single thing in my collection but I think I'm more attached to certain items.
My Ayu Mi-X II double vinyl, the Mirrorcle World Ayupan on the ship as well, the Ayu-Mi-x 7 Limited Box (was the first "limited" thing I ever got from her haha), The Visual Mix PS2 videogame and even if it was a second hand item, I still own and treasure my Duty copy, was the first Ayu item I ever got when I got my first ever salary when I was like 15 years old
