Can be found in the Reliquary of Notre-Dame, which requires Double Jump to access.

Once you reach this area, you will need to jump and dash through a spike challenge. At the end, where you’ll use a final Aerial Rush to get past the final spikes, perform a second jump to cling to the wall, hitting a switch in the process.

You can now drop down and go past the EXP Statue to find the chest housing this Relic.