Saitama and the Slime (OPM x Tensura)

Ogres with Benefits

A day later, Saitama and Rimuru went to the cave.

Rimuru ordered Gobta, Rigur and his team to hunt food.

Saitama and Rimuru decided to test something out inside the cave.

Rimuru made a duplicate of himself and examine his appearance.

Rimuru:
"I really look like a feminine huh?"

Saitama in blank look:
"It's because you are"

Rimuru:
"...."

Rimuru was annoyed of Saitama but he get used to it.

Saitama:
"Now I think about it, I can also turn my body into younger but"

Rimuru raised his eyebrow

Rimuru:
"But?"

Saitama whined:
"My hair won't come back..."

Rimuru was blank for a moment until he burst out laughing.

Rimuru:
"Oh come on you are really cheeky, do you think you can just grow your hair back after your ridiculous training?"

Saitama:
"I just assumed it will"

Rimuru:
"So show me how you turn yourself younger"

Saitama:
"Ok"

Saitama ordered Omni Sage to make his body younger by using Extra Skill: Body Shift. He learned the skill by just out of the blue. Body Shift means shifting your body to younger or to older one, it is a temporary disguise that doesn't affect the original body's status.

As Saitama turn younger and his height becoming shorter, he turn to 12 years old and speak younger.

Saitama:
"So what do you think?"

Rimuru:
"You can disguise yourself huh?"

The testing stopped when they received a telepathic link, Saitama return back to his normal self.

Rigur in call:
"Master Rimuru, Master Saitama! We are under attack by a group of ogre"

Rimuru:
"What!? Wait for us in a minute! We'll get there!"

Saitama:
"What happened?"

Rimuru:
"They got attacked by a group of ogre, we need to help them"

Saitama and Rimuru dashes forward to the forest and saw Ranga was aiding Rigur while Gobta was injured by the old ogre's slash.

Injured Gobta:
"I'm gonna die! I'm gonna die!"

Rimuru:
"Relax, you seem okay"

Injured Gobta:
"M-Master Rimuru! I'm sorry for insulting you earlier about the boob thing, please help me--"

Rimuru splashes Gobta with a healing potion and Gobta heals completely.

Gobta:
"Thank you very much! I really appreciate it!"

Saitama:
"Did that kid insulted you?"

Rimuru:
"Hm, earlier, he told me if I eat more, my boob will grow bigger-- wait, it's none of your business!"