"Mr. Fian—our computer science teacher—once explained about electric motors and micro linear actuators—which are typically used to move objects..." Julian said with a confident smile.
"But..." Julian continued, his expression immediately changing to one of less confidence.
Lavendina stared at him with a confused expression.
"...Since I can't see the inside directly, I can only guess, hehehe," Julian continued, chuckling and scratching the back of his head with his left hand, looking at Lavendina.
Lavendina smiled back at Julian, to keep his confidence from fading.
"In computer science, electricity is needed to move electronic components, right?" Lavendina asked, trying to lighten the awkward atmosphere and regain Julian's confidence.
Julian nodded.
"Then, do you know where my smart padlock's power source comes from?" Lavendina asked, looking at him curiously.
