A moment later, Yuriko felt feeling of fatigue came from the previous usage of Clear Eyes are disappearing while the same she felt herself becoming very aggressive.

  She has begun to running around her cage doesn't know what to do with the thing she feels right now. There is a large amount of pent up energy, inside her and she wanted to release it to something or someone. And the eeriest thing was despite feeling like wanted to kill someone Yuriko still able to think clearly.

  After being injected with a green drug, doctor White carried Yuriko to another room with a large table placed in the middle of the room. Above the table, she saw a large rat with black fur in a large cage.

  'Looks like I need to kill this bastard if I wanted to live.' Yuriko thought as she noticed dried blood from her predecessor stuck on large rat's claw and fur.

  *Squeak!*

  The moment, it notices another prey entering the cage, a large rat immediately charged towards the new food, to rip off the throat and eat its flesh.

  Maybe thanks to the drug or from previous experience, Yuriko didn't fear large rat that almost twice the size of her. Firmly placing her hud leg on ground while arching her back, she prepared to receive charge head-on.

  As a rat, she knew running only made things worse, because as a rat, she can't face behind without moving her entire body. Her other choice was standing up, which is, same as a death sentence when facing against something that twice big as her.

  Clenching teeth Yuriko received the large rat head-on. Thanks to the status boos she received from weird dust she able to overcome the difference between size, but she knows this is far from over.

  Seeing food didn't reveal its throat immediately large rat opened its mouth and bit on side. Yuriko waited for the pain, but it didn't come. She clearly sees a large rat biting some part of her body, but she didn't even felt it.

  Quickly throwing her questions into the back of her mind Yuriko straightened her claws turning similar to knife-hand and stuck large rat's eye.

  *SQUEAK!*

  With a sequel, a large rat released the part biting and tried to retreat, but Yuriko immediately moved under its jaw and pushed the body upwards. Both of them struggled to overpower each other. Yuriko used her every strength to lift it's head while a large rat also used all of its strength to push down and push her away.

  After some time scale finally changed in Yuriko's favor as large rat begun to tire from the constant struggle while she still showing no sign of fatigue. Finally overpowering her opponent she ripped off its throat. Even at the death door, a large rat was able to leave two bloody claw on Yuriko's back before taking his last breath.

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  Feeling heavy taste of blood in her mouth, Yuriko received a message from the system.

  'New organ ?'

  Yuriko understood things about evolution but the first time she even heard new organ forming inside her right now.

  'Then what usually required to get a new trait ?'

  'Then what kind of organ I got ?'

  'What? How is that suddenly turned into eating ?' Yuriko thought while being carried back to the room.

  'I can ?'

  Yuriko couldn't imagine her self eating dirt or iron, but the knowing system never lied to her until now. She decided to give a shot as a thing made of an iron right in front of her.

  "Squeak!"/Yuk!/

  After one bite Yuriko immediately moved back as she tasted iron combined with the sound of her teeth made her feel very uncomfortable.

  'No wonder they said hardest part of dog training is teaching them a taste of iron.'

  Even now taste still in her mouth.