Hajime-san!"
"Onii-chan!"
Shia and Myuu were elated and smiled widely. Although it was necessary to conquer the Great Dungeon in «Great Volcano» before they travel to «Seaside town, Elisen», Hajime decided to allow Myuu to accompany and determined in his mind, "Well, we'll manage somehow."
"However, Myuu. Can you stop calling me Onii-chan? It's okay to just call me Hajime. What can I say, the way you call me make me itch."
Because Myuu was hugging him in joy, Hajime said his demand while feeling half embarrassed. For an otaku to be called "Onii-chan"... various things might happen.
Hajime's demand made Myuu puzzled for a moment, but before long she nodded as though she understood it... and she answered with something completely different from what everyone had expected.
"... Papa."
"... Wh-What? Sorry, Myuu. I seems I didn't hear it correctly. Please say it again."
"Papa."
"... I-it must be that, right? A word that means "Onii-chan" or "Hajime" in Sea-dweller tribe's language, right?"
"Ah-uh. Papa is papa."
"Um, wait a sec."
Hajime used his hand to massage his forehead and Shia timidly asked Myuu why she used the word "Papa" to call Hajime. Then...
"You know, Myuu doesn't have a Papa... He had gone to where the God is before Myuu was born... Ki-chan, Lu-chan, and Mi-chan have theirs but only Myuu doesn't... That's why Onii-chan is Papa."
"I somehow understand, but I want to tsukkomi your "that's why," Myuu. Please anything but Papa. I'm still only 17 years old, you know."
"No, it's Papa!"
"Okay. Then Onii-chan is okay! I don't want such an extravagance title, so stop with Papa!"
"Nooo!! Papa is Myuu's Papa—!"
Afterwards, he tried various things to get Myuu to stop calling him "Papa," but Myuu displayed unexpected stubbornness, even more than the time she called him Onii-chan, and as the result, it was not revoked. As such, he could do nothing but made her mother persuade her when they arrived in Elisen. Hajime's expression looked like he was suffering his greatest damage since the time he came out of the Abyss.
The the discussion with Ilwa was over, they returned to the inn, and a dispute broke out in regards to whom would be called "Mama" by Myuu, and for the time being, Tio who would become a bad influence to Myuum was rolling on the floor because Hajime had tied her. Naturally, she was excited by it...
In the end, she didn't want to call anyone "Mama" except her real Mama, so Yue, Shia, and even Tio settled with "Onee-chan."
Then at the night, everyone slept together in a kawa-no-ji style because Myuu wished for it. Once again problem occurred on who would sleep beside Myuu and across Hajime. However, the exhausted Hajime made Myuu sleep in between him and Yue. Shia was dissatisfied by this and threw a tantrum, but somehow she was able to sleep after she finished saying all of her complaints.
That day, the 17 years old Hajime became a Papa... and now the journey together with a child began!