Prologue
"Your dead Souma!!!!!!!!" screamed the Demon Princess Lucille.
"Oh I'm sorry, I didn't realize anyone was in here" Retorted Souma our stories idiot protagonist, who is nothing more than an accidental summon by the Goddess Renaré who was looking for Souma Tatsuya's half sister Elizabeth Tatsuya, who happened to be visiting Souma and his Dad during her summer vacation from her school in America where she's studying abroad.
Chapter 1:
"Souma come with me to the gas station, I don't know where it is." said Elizabeth
"Why though, it's not like we need anything and it's 10pm, you'd be lucky if they were still open" replies Soma in a passive aggressive but light hearted tone.
"Just come with me" asks Elizabeth slightly, becoming ticked off.
Souma, afraid of what will come next if he says no again, reluctantly goes with Elizabeth to 8-12. "Thank you" Elizabeth says in a loli kind of voice.
Souma groans but decides to keep to himself as he doesn't think it'd be a good idea to say what he's thinking.
As they are walking a weird goldfish yellow glow starts to surround Elizabeth and Souma stupidly decides to hold on to Elizabeth as they are then transported to the Goddess Renaré's palace.
"Welcome heroes from another world. I am the goddess Renaré, and I have brought you here young Elizabeth Tatsuya because the Kingdom of Calestania requires your aid in the battle to defeat the Demon King who is attacking them unprovoked because he wants to completely take over the nation's trade routes." Replies Renaré who looks unnecessarily dressed up for an Isekai summons.
"Umm ... .What?" asks Elizabeth, completely puzzled.
"Never fear child, it may seem confusing now but you'll learn more about what being a hero entails from the Calestanian royal officials. Now off you go" says Elizabeth as she prepares to send her to the Calestanian palace.
"Waiiiiiiiiii" says Elizabeth looking at Souma before she's able to finish her sentence the Cold light of the goddess completely covers her and sends her to the Calestanian palace in the Royal Capital Ingestion.
Souma completely dazed and confused at the sight of what just happened to his sister asks Renaré "Hey um Ms. Goddess what about me I'm still here".
"Uhhh damn it you got pulled in with your sister that wasn't supposed to happen, arrgh the portal back to Earth is closed now. So I can't send you back, and if the higher ups find out about this I'd be the laughing stock of the Coalition" says Renaré in a completely different tone than she had with Elizabeth.
Souma caught off guard as to what just happened after hearing he can't go home. Thinks to himself, "Oh shit this is bad, this is where the protag who wasn't supposed to be summoned always gets sent to their death by the goddess who doesn't want any loose ends, in every Isekai novel."
Souma asks nervously "So what happens to me"
Renaré, unsure what to do, gives Souma a choice "You have two options, the less favorable of the two, but it allows you to go back to Earth but you'll have to die and be reincarnated. Or I can send you to the palace of the Demon King and give you unchallenged power and have you placed in the Army under the Demon Princess Lucille where you'll be her obedient slave but you'll be treated as a subordinate."
Souma, unsure of whose choice is better, asks Renaré "What kind of power will you give me?"
Renaré replies "If it's in my abilities than any power you can think of."
Souma, completely blown away by what the goddess said replies "In that case, I want you to give me all the curse techniques of Yuji Itadori and the curse techniques of Satoru Gojo, but that also includes Yuji's extremely durable and fit body but also all his martial arts knowledge."
Renaré thinks about it and says "I can do that but there's a catch if you want Yuji's durability you'll have to either sacrifice infinity or red, blue, and purple technique."
Souma goes over it in his head and thinks "Hmm.. If I sacrifice infinity that'd be like Goku sacrificing SS3 for Kaio-Ken, but if I can't use Limitless techniques then that'd be a major loss and I don't want that." After giving it some thought Souma tells Renaré "I'll sacrifice infinity as long as I get an automatic translation skill for language in this world."
Renaré agrees to the proposition and sends Souma straight into the care of the Demon Princess.