SpongeBob was just going about his day in Bikini Bottom when suddenly a warp appeared and it spat out 4 anime looking idiots originating from a manga.
"Holy fish paste!" Spongebob exclaimed for he noticed the humans immediately suffocating, prompting the yellow sponge that could to blow some bubbles for them to breath in. "Phew; that would have been trouble! Are you all okay?"
"Not really but thanks for the save." Kazuma asked while taking a look around them. "Guess Aqua wasn't kidding when she said this whole world is underwater..."
"Oh you'll like it here in Bikini Bottom!" Spongebob laughed heartily for he then proceeded to introduce himself. "I'm SpongeBob Squarepants; pleased to meet you all!"
"I can't believe a talking sponge is actually speaking to us..." Aqua bemoaned for she was too embarrassed for not having enough power to make herself breath under the sea what with her being the water goddess and all.
"Oh don't worry; I'm strange but there's plenty of other equally weird things down here!" Spongebob pointed out with a happy smile, putting on his working hat. "Speaking of which I gotta head to work! Care to join me at the Krusty Krab?"
"Well I am feeling hungry." Megumin spoke upon which her stomach began growling.
"I am interested in what it is you serve at this crusty of crabs!" Darkness added for she had her sword out and ready to go.
"Well you certainly are all excited to try out a Krabby Patty!" Spongebob laughed for he then began walking westward. "Well follow me friends! You're gonna like them I can tell!"
"That sounds like a hamburger. I haven't had 1 in a good while!" Kazuma declared for he was getting pretty excited about this predicament. "Do tell are there any monsters to fight here?"
"Oh we get plenty of them!" Spongebob spoke while continuing his laughter.
Watching this unfold of course was Sheldon J. Plankton with his big telescope from the crushing comfort of the Chum Bucket, watching the group head into the main fast food business just across the street.
"Oh great; that yellow idiot manage to score those weird looking monkeys from the surface!" Plankton cursed while holding his arms together. "And just when I was about to go and steal the secret formula!"
"You know you can still do that Sheldon." Said Karen who rolled in on her mobile computer form with her metal arms on her robotic stick of a body. "Then again I doubt you have an actual plan to go with this-"
"Of course I got a plan!" Plankton huffed for he had a nearby portal activated after witnessing the encounter earlier. "Anyway I'm gonna go see what their world is like; be back in a flash!"
"You're not going to miss much." Karen sighed for she watched her husband go right into the warp, with her deciding to go back to cleaning the lab around. "Lord knows what he'll get himself into."
Plankton screamed for he landed in the world of Konosuba, looking around to see that he was in front of the shop, the green colored planktonic copepod chuckling for he rubbed his stubby hands together and dashed in, only to see Wiz farting which in turn made him cough.
"Oh dear; a guest when I'm so gassy..." Wiz gasped for she was very embarrassed over her massive methane making.
"I can't breathe!"