After taking a good look at the four directions this time around, I immediately switched locations with my replica using Replica: Switch, then walked up to the girls.
"Okay, this time it's pretty simple. If the direction I'm currently facing right now is north, then the tetrahedrons will be at north, south, east, and west respectively."
"So, just the cardinal directions, huh?" Hina-nee murmured.
"Yeah. I'll take north," I proposed.
"I'll take south," Hina-nee added.
"I can go east," Furuwa said.
"… Leaving Nadeshiko with west," I concluded. "Alright. Everyone, try to meet back here in an hour."
The three girls nodded to me, confirming that they understood my instructions, and we set off in our respective directions.
*****
It didn't take long for me to find my tetrahedron. Really, all I had to do was keep walking forward. Half an hour later, I was at my target.