When playing The Legend of Heroes: Trails in the Sky FC, you need to complete some side quests. There are quite a few side quests in the game; some can be followed through with guidance, while others require some thought. Some players don't know where the prototype is in The Legend of Heroes: Trails in the Sky FC, and they search for a long time near the location but cannot find it. Moreover, there are many monsters nearby, which makes it very easy to trigger battles. There are mana-draining small monsters, and the limit on magic and seal magic adds to the difficulty.

In fact, this side quest item is not found on the map but is dropped by defeating a monster. Players need to defeat the Armor Crab outside the Azure Tower. After defeating it, a prompt will appear stating that the wanted monster in the Aina Highway has been eliminated, and you will receive the "Prototype Zero Conducting Gun," which is the required quest item.

Then, take this item to Joanne's Weapon Shop and talk to the NPC "Garno." You'll learn that he was attacked by monsters on his way through the Aina Highway and lost a bag containing important prototypes. He managed to escape here and hopes that the player can help him find them.

Hand over the gun directly, and he will be very grateful, then give you an attack 2 quartz circuit as a reward, as a token of his appreciation. Many people cannot find this item because they mistakenly believe it can be picked up directly from the map, when in fact, it is obtained by defeating the Armor Crab.

There are many similar side quests in the game. For this side quest, you can either first accept the task from the NPC or directly obtain the quest item beforehand, then go and talk to the NPC to hand over the item and complete the task. The result is the same either way.

Regarding where the prototype is in The Legend of Heroes: Trails in the Sky FC, I believe everyone now understands after the above explanation. This item is not found on the field map but is obtained by defeating a specific monster. Once you have the item, you can hand it over to the corresponding NPC to complete the side quest.