"Then it's settled. The moment a Rain Child appears, Mom Senpai and I will come right over."
With Mrs. Ozawa watching them anxiously, Amamiya Natsuki and Ryuzaki Mom stepped away together and quietly hid in a corner.
While they waited for a Rain Child to appear, Amamiya Natsuki picked up the megaphone and started recording. Besides amplifying sound, it could record audio in advance and be set to play it on a loop.
"Mom Senpai, if I leave the megaphones outside, won't the monsters destroy them?"
Amamiya Natsuki turned to ask.
"They probably won't." Ryuzaki Mom pressed her lips together. "Those monsters only react to human voices. If it's just a megaphone, they'll ignore it... We passed a pachinko parlor earlier, and the music inside was really loud, but none of the monsters tried to destroy the place."
"Then I don't have to worry."
Amamiya Natsuki nodded, switched on the recording function, and began recording.
"Hello? Miko, remember that videotape we snuck a peek at together during summer break in our second year of middle school?"
"Huh?"
Ryuzaki Mom's eyes widened. She quickly realized what Amamiya Natsuki was trying to do and couldn't help reminding him:
"The parallel world you're from isn't exactly the same as ours. Maybe in our world, we never snuck a peek at a videotape together at all."
"It's fine," Amamiya Natsuki replied unconcernedly. "The important part of what I said wasn't the videotape."
Ryuzaki Mom tilted her head.
"If it wasn't the videotape, then what was it?"
Amamiya Natsuki smiled.
"My voice. The two worlds might not be exactly the same, but there's probably a version of me in yours. As long as Miko hears my voice, she'll know who I am."
"..."
Realizing Amamiya Natsuki had already considered her suggestion, Ryuzaki Mom gave an