"Sakuretsu Armor" targets 1 monster.
If the turn player chains "Book of Moon" to "Sakuretsu Armor" to flip the attacking monster face-down, then the attacking monster is not destroyed by "Sakuretsu Armor".
"Sakuretsu Armor" targets 1 monster.
If the turn player chains "Book of Moon" to "Sakuretsu Armor" to flip the attacking monster face-down, then the attacking monster is not destroyed by "Sakuretsu Armor".