I hate being in pain, so I think I'll make a full defense build - Chapter 14

An experiment gone wrong, or possibly right? A Nascent Kaleidoscope opens his eyes.

A reincarnated Zelretch story. Previous Fate-series knowledge recommended.

A Fate/DxD/Multi Crossover.

In Light of the horrendous new update, know that I do cross post on Fan Fiction dot Net.

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Qi Laiyan was a tycoon worth billions. Due to a special gene in his body, he possessed a body that never got sick.But he could only live to 50 years old.After his death, half of his estate would belong to his contractual wife.One day, Qi Laiyan, whose body had never had any issues, suddenly started coughing.His darling wife, who loved him desperately and only cared about the man not the money, rushed to the hospital in the freezing wind, grabbing him and crying until she was a tearful mess.“Why did you suddenly start coughing, honey! What will I do without you?!” She cried hoarsely, so despairing.Qi Laiyan looked at this scene he had anticipated long ago, feeling nothing but annoyance.Just as he was about to chase the woman away as usual,A voice suddenly rang out in his mind.[Good boy, is this coughing? This is hitting the jackpot for me!] [How will I live? Of course by inheriting your assets and dancing on your grave after the seventh day following your death!]Hearing this voice identical to his teary-eyed, soft-gazed yet desperate little darling wife, Qi Laiyan fell silent.Unsure, listen further…

Introvert!? Me!? The hell am I an introvert? I stay indoors all day because I am afraid of getting my butt kicked.Until I contract my beast, I won’t be walking freely. This is a promise I made to myself.My name is Ryder, and I am black-marked. The planet where I live is dominated by summoners. If you guessed it, then you are right—we contract beasts from the Astral Shadow Plain and summon them at will after successfully forming a contract.A mark appears on the left shoulder of every human after a period of maturity, a mark given by the beast that chooses you. There are five different types of marks—the brown, the orange, the red, the black, and lastly, the white.Of all the markings, I was marked black. I was chosen by a supreme demon monarch of the Astral Shadow Plain—the Dracogon.There was only a 0.5 percent chance for me to survive the contraction process. However, with a slight twist in the original outcome, contracting a creature from the black-marked plain was nothing compared to the catastrophe I caused shortly after—I opened a link between the beasts of the Astral Shadow Plain and the planet of humans, Terra.Everyone on my planet has been endangered because of me. The fact that no one knows when the link will trigger and cause a breach that pours mindless creatures into my world makes it all the more unsettling.Now, with no other choice, I have to find a way to resolve the mistake I made—alone, just like I caused it.

The youngest A-rank adventurer, child prodigy Kaizer, finds three babies who were the only survivor of a destroyed village. Then he decided to give up his job as an adventurer and raise them. Over time, the girls grow brightly and show exceptional talents in fencing, magic and management. However, these girls also seem to love their father, Kaiser!