| Name | Description |
| Phaethon’s Ability | Phaethon uses the HDD system to Sensory Sync with the Bangboo Eous, allowing them to enter the Hollows as the Bangboo. |
| Phaethon’s Ability | Bangboo have specialized detection capabilities, commonly known as the “Bangboo View” mode. Bangboo can use it to quickly detect available devices nearby, such as their specialized Bangboo Workbenches. ※Bangboo View is unaffected by obstacles. Press  to activate Bangboo View. |
| Marcel Maze | Bangboo’s exclusive virtual visual space that can automatically “visualize” mission targets when the Bangboo is connected to certain intelligent systems. Explore the Marcel Maze and find the hidden Observation Data. |
| Marcel Maze | Press  , to make Eous jump up.Hold to have Eous jump higher.Press  , to make Eous dash forward. |
| Hollow Supply Box | During Hollow Exploration, you may occasionally find supply boxes left behind by investigators. The Supply Boxes vary in level. Get close to obtain them and obtain supplies. Be sure to actively collect and properly use them! |
| Marcel Maze | Press , to make Eous jump up. Hold to have Eous jump higher.Press , to make Eous dash forward. |
| Marcel Files | Bangboo’s exclusive virtual visual space that can automatically “visualize” mission targets when the Bangboo is connected to certain intelligent systems. Explore the Marcel Files and find the hidden Star Anchor Data. |
| Marcel Files | Eous has gained the hammer ability! Press  to perform a hammer strike.Hammer strikes break or activate specific mechanisms, and some mechanisms can be struck multiple times, helping you clear stages! |
| Data Observation Devices | Stand near a device to activate it and begin automatic data collection. |
| Data Observation Devices | Nearby enemies will interfere with the data collection, causing the indicator light to turn red. |
|
it's already here