[Seeing your shocked expression and apparent interest in "that man," the old woman suddenly said, "I still have some things he left behind back then at home. Would you like to see them?"]
[You came back to your senses and hurriedly nodded, indicating that you would.]
["Wait a moment. It's been so long, I'll need to look..." The old woman rose and went to the storeroom in the backyard. After rummaging through chests and cabinets for a long time, she finally pulled a metal cube out from under the leg of a table.]
["This is it... The day before he died, he gave me a lot of metal 'toys' and told me to keep them as best I could. Unfortunately, after all these years, everything else broke. Only this stone was sturdy enough to last. I often use it to prop up a table leg..."]
"..."
Mu You took the object from the old woman. When he saw its description, he already had a few suspicions.
And the text that appeared next confirmed them.
[You obtained "another Mechanical Heart."]
It really was a Mechanical Heart!
The Mechanic had left several sets of Primordial Battle Armor and a Mechanical Heart in Eden, taking only two special sets of Battle Armor with him.
But he would certainly have needed a Mechanical Heart as a key to control his own Battle Armor, too.
Mu You had previously suspected that there was more than one Mechanical Heart. Now that suspicion had been confirmed. Mechanical Hearts could be manufactured repeatedly, and the Mechanic might have possessed many of them.
[This Mechanical Heart looks almost identical to yours, except for a one-use Sound-Recording Array Pattern engraved on one face. Perhaps you can assemble it and try playing its contents.]
[You assembled the Mechanical Heart and powered