Future Fusion Ruling Question

[Renji Asuka]

For context, here is the text of Future Fusion

During your 1st Standby Phase after this card's activation: Show 1 Fusion Monster in your Extra Deck and send the Fusion Materials listed on it from your Main Deck to the GY. During your 2nd Standby Phase after this card's activation: Fusion Summon 1 Fusion Monster from your Extra Deck with the same name as the monster you showed, and target it with this card. When this card leaves the field, destroy that target. When that target is destroyed, destroy this card.

Now typically cards that target, do so on the left side of ;

Now say I play a Fusion monster that cannot be targeted by cards or effects. So would that mean Future Fusion would not be attached by said Fusion monster?

[Genexwrecker]

Future fusion would apply normally to that monster.

[Christen57]

Future fusion would apply normally to that monster.

You might also want to explain why your answer is correct when giving such answers.

In this case, Future Fusion's effect is to Special Summon the monster AND do X, meaning special summoning said monster and doing X happen simultaneously. Monsters with effects that say they can't be targeted by effects only apply after they've hit the field, meaning once you special summon the monster with Future Fusion, that monster's anti-target effect applies after the special summon, but since the targeting by Future Fusion happens at the same time as the special summon, that means the targeting happens after the special summon but before the "can't be targeted" effect begins to apply.