>>1323286TL;DR: This anon is a basement dweller retard that never had to move in his entire life.
Botan most definitely hired movers, she just has sore back from packaging her stuff.
Because you do it bent down or sitting on the floor, typically. It's not from lifting heavy stuff though perhaps from being unfit hikki and lifting light objects many times and having to bend down to get them.
You'd know that if you had to do it once in your life.
Movers are typically male and I'm sure a female idol (for all intents and purposes) living alone would JUST LOVE for them to go grabby through her stuff.
Don't reply to me or my cat ever again.