1 official ruling from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

This Digimon attacked a player and a security check occurred. If this card leaves the battle area due to the revealed card's <Security> effect, does this card’s <Your Turn> effect activate?
No, it doesn’t activate. The effect triggers when a card is removed from a security stack, but this card is removed from the battle area before it can activate.
Ruled Mar 28, 2024
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