Accel Synchron vs Quickdraw Synchron

If you send "Quickdraw Synchron" to the Graveyard, this card's Level is reduced by 5. In this case, this card's Level becomes 1. Also, after this effect is applied, if "Star Changer" increases this card's Level by 1, its Level is recalculated. From its original Level 5, its Level is reduced by 5 using its own effect, then its Level is increased by 1 using the effect of "Star Changer". Therefore, this card's Level becomes 1 (5 - 5 + 1)