Ultraman Omega S01 E05 Miko and Mikoto

"From the sky fell an alien. My name is — OMEGA"

Sorato heads to a quiet rural town, tasked with delivering a package Kosei forgot to send. There, he encounters Miko, a young girl who shares her life with a giant serpent that eats steel she affectionately calls "Mikoto," and her aunt, Sasako.