We are not speaking about 1% drop rate items from battles direct drops or even super low quest lottery reward that is obtainable again here, theses are a one time deal as thats not a campaign as far as i know this is permanently in the game and players can do theses at any time that they want, that situation that i am in that you speak of  is being depraved of the only option there is for conserve tp. Even if this was intentional i do not think it is appropriate , with everything i have done atm there is zero solution about this so far & an official answer would at the very minimum be nice. ps: No i do not have a japanese friend to post on japanese forums