Four useful hidden features: support, Dancer, licenses, and the night shopMinor spoilers
Four features from the video: accumulate support through chapter restarts, unlock Leda’s Dancer in Chapter 9, buy exam licenses at regional markets, and find Anna’s night shop in Chapter 10.
Original video: Four useful hidden features: Bond Level 3, Dancer, a hidden shop, and exam licenses; Japanese gaming channel kyoto no ken 【Gaming review】.
1. Accumulate support through chapter restarts
If support blocks recruitment, use a “dine—restart chapter—dine again” loop. Normally, each dish is available once per week. After all three, you must wait. Choose Restart Chapter at the Pale Raven’s Perch: story progress, levels, and EXP return to the chapter’s start, but support points remain. You can dine again until you reach the required Bond Level 3.
Do the crucial step one chapter earlier: give your target a gift so they become a guest. If you first give the gift in the chapter you restart, guest status resets too, preventing an immediate meal invitation.
Start the loop at the beginning of a new chapter, before clearing dungeons or obtaining equipment. Restarting means redoing those activities. The benefit is smaller once your mid- or late-game roster is settled, but shared support makes recruiting favorites earlier much easier when you start another protagonist.
2. Become a Dancer in Leda’s Chapter 9
- 1Accept the
Dancer inheritance request, then retrieve the quest item at the designated oasis. - 2Report to the tavern and receive
Dancer's Necklace. - 3Bring the accessory to the examiner, advance the event, and become aDancer.
Advanced classes normally require level 35, but this quest lets 
Leda change early. While teammates are just entering specialty classes, she already has Dancer’s extra action. That makes a major difference.
Dancing gives her action to an adjacent teammate who has already acted. Against a weakened strong enemy, another attack from your damage dealer makes finishing easier. For leveling, an extra action helps the trainee catch EXP-rich enemies such as silver mummies. Giving the unit who most needs to act another chance on a crucial turn is what makes Dancer so useful.
3. Check regional markets for exam passes
If the stock beside the examiner is insufficient, check markets in world-map towns. Open a location’s facilities and switch to the market page to see whether it sells what you need without visiting every shop.
Some star-shaped settlements sell 
Specialty License. You can buy 
Advanced License at the market in Megaira, the southern royal capital. Several characters need class changes after reaching specialty tiers. Checking only the examiner’s shop makes licenses feel perpetually scarce; checking regional markets makes shopping much easier.
4. Visit Anna’s shop at night in Chapter 10
In Chapter 10, visit Dagsion’s highest level at night to find 
Anna’s shop. Daytime and nighttime visits differ, so get the timing right.
The displayed stock mainly consists of stat-boosting accessories, each priced at ten thousand gold. If you have money and need the corresponding stat, buying directly is convenient. If money is tight, check the price and the stat you actually need first. Stock changes with progress, so return later too.