Ethan finally reveals the real identity of his twins to Grandpa Go and his cousin Yasuhiro. He knew that even though Mother Ito, Hideaki's mother would take good care of her grandchildren. Ethan just wanted to make sure that his twins would also have another set of grandparents who will protect them.
"Ethan…Wh-what did you just say? There must be a mistake…I think I heard it wrong, Yasu…I heard it wrong right?" Grandpa go started to randomly say things as if he couldn't really believe what he just heard.
"Grandpa…I think we both heard the same thing so…" answered Yasuhiro who kept his eyes on Ethan observing if the omega was making fun of them.