Rimuru's married life was going well. He had a lot of things to do during the day, and he was having loads of fun during the night, every night. With his boundless stamina, and detailed knowledge of earth's porn industry, he could satisfy his wives at ease.
However, something had been bothering him lately.
The girls loved him, that was for sure. However, did he deserve that love? He'd actually asked that question to Shuna.
"I only saved you guys out on a whim. Do you think I deserve-"
"Sometimes you really worry like a girl," Shuna said. "Do you perhaps happen feel like a girl at times too?"
"What do you mean?"
"I mean your overthinking tendencies. Are you… no, do you feel like a girl? Actually, which body are you comfortable in, Rimuru?"
They were the only ones in the office. But Rimuru was sure the goblin behind the door was eavesdropping. He was going to give him an earful later but-
Comfortable huh… overthinking.
"This one?"
"Are you sure?"
"Yeah?"
"Why not try to use the other body for a day?"
"Umm… but it feels like Shizu-"
"She's dead. Your body is your own. It's modeled after hers but it's your body."
"Okay," the magicules around Rimuru's body swirled in a black mist and his body changed shapes. His hips widened and his chest got just a tad heavier. "Both body feels about the same."
"You look so cute!" She gave me Rimuru tight hug and sniffed her hair. "Don't tell Shion," she said, giving him a big wet kiss. "I always wanted to do that to you."
"But you already do," Rimuru mumbled.
The warmth of her lips lingered on his and an odd tingle spread throughout his body, like a fire. The new body, although familiar, was very unfamiliar. His heart fluttered like never before.
"Yes, but not while you're a girl," she whispered. "Do you maybe want to… explore a little?"
"I can't," he said. "IT's Shiz-"
"It's your body. I'm your wife. We can do whatever we want. You and me."
Rimuru gulped.
The space between his legs felt a bit too weird. Like there was something missing there- which it probably was. He hadn't formed any genitalia. Even just a couple of weeks ago this was the norm but lately he walked around with a penis because his wives loved seeing a bulge.
Shuna went closer to the door, whispered something and locked it.
Next, she came close to Rimuru and sat down, pulling his pants down without a word.
"There's nothing here," she said, giving the clean area a long-wet lick.
Her tongue met with little to no friction.
"Mmh… it's still sensitive you know," Rimuru mumbled forming a streamlined cock.
"Can you form… a vagina instead?"
"Why?"
"I want to try pleasing you like you please me."
"But you don't have a penis."
"Yes, but I have a tongue and I know how to pleasure vaginas. It's… let's say, an investment. I will show you a really good time so you know, you can show me a just as good if not better time later," she winked. "I want you to eat me and stuff."
Rimuru gulped and for the first time thought about growing a vagina. He didn't need the uterus, just the vagina and maybe some glands.
Raphael took care of the rest.
"Form an anus too," Shuna smiled.
Rimuru obliged.