Y/N and Itto traveled rather far to the domain, then they realised that their rank level IS TOO LOW TO PARTICIPATE IN IT! Itto cursed violently under his breath but Y/N had a clever, but dangerous idea. "Why don't I just... I don't know-disguise as a cell? I'll shrink myself, and I can just bring something with me?" Y/N sounding unsure about themself. Itto had no idea what Y/N was talking about but he agreed anyways because they were his last hope. Both of them trekked back to the headquarters to meet Lisa. Lisa bubbled and popped her ingredients while she was stirring the blue, greeny liquid. The door creaked as Lisa stared upon us. In a moment, Lisa clapped her hands and jumped. "Ooh! Are you back from your quest already?" she asked in a babying voice. "I need a shrinking potion, as small as a plasma cell, ASAP." Y/N said quickly as Itto gave her a concerning look. Lisa has already have that kind of potion in store and handed it to Y/N.

"Take care!" she waved. Itto and Y/N stood infront of Mondstadt and discussed on how this is going to work. Y/N was getting serious, "Give yourself a small cut, enough to see some drops of blood coming out.". Itto did what they said. "When I enter your body, I will carry some anti - bacterial poison to smooth it out, I will also carry some for the toxins and parasites though I can still use the antibodies that is still in your body left by the Memory B Cell. Okay?" Y/N boomed. Itto was morally confused at that time. Y/N chugged the pink, chunky potion and felt themself grow smaller and smaller. As that was happening, Y/N climbed onto that cut and dived in. It was a mystery, they were FALLING FROM THE DAMN SKY! Y/N has just entered Itto's Lymphatic blood vessel. They were no cells in sight- other than the little platelets clotting that wound with some fibrin. A long, slender body with prickly skin came up to Y/N with a face that looked the The Scream from Van Gogh.

Y/N got the anti-bacterial poison and threw it at the creature. It screeched-without saying a word, they walked off arrogantly acting they've did something amazing, not after they find out there's more where that came from, in fact, A MILLION! THERES LOADS! The receptors of the white blood cells (Type: Neutrophil) set off ( A message from the Helper T cell) and they travelled under a minute to the virus. Y/N, on the other hand, got swept off by rushing red blood cells! It looks like most of them were carrying O2 (Oxygen) Y/N found themself near the heart- though they knew if they didn't get to work soon the red blood cells will sweep them off the whole body! The white blood cells will also be tracking down Y/N as they are a foreign substance to the body. Now on Itto's point of view, it looks like he's in pain, but he knows it'll be over soon, or will it?

??? why did i make this biological ??? do people even understand what's going on ??? im confused but sorry. i hope you learnt something from this then lol,