✔ 最佳答案
If you win,it won`t be delete,but if you lost,some of your item will be delete.
HM is a item that won`t be use up,you can teach it to as many pokemon as you like.
So,teach your Pokemon will be better
You can get the item in 太陽洞窟(たいようの どうくつ):
ダイビング 潛水 surf 在太陽洞窟(たいようの どうくつ)10F,需鑰匙 (key)
たきのぼり 魚躍龍門 waterfall 在太陽洞窟(たいようの どうくつ)15F,需鑰匙(key )