Here will go Quest ideas of Zapdoszulu that I have.
Expert Belt Side-Quest
Location: Violet City
The Expert Belt side quest is not mandatory, it is recommended that trainers complete it before challenging Falkner. While on a side quest, your Pokemon will not be healed automatically so any damage or non-volatile status ailments (Freeze, Burn, Paralysis, Poison, Sleep) will be carried into the next battle (if more than one are involved). Hence, the only way to heal your Pokemon is through the use of items until you’ve completed the side quest.
You may pull out of the quest only in between battles but must start from the beginning again if you wish to try again. Items that you received the first time prior to pulling out will not be available the second time round. You can complete the quest as many times as you please, but the rewards you gain first time around don't recur.