The team walked to Oak Town. Everyone, but Kireba were aware that it was where the Phantom Lord guild hall was originally built. Erza thought the menace was from Phantom Lord. Lucy tried to fill Kireba in on the details about the guild, but she was focused on her own thoughts. On the way there, Kireba found a snake with a black mouth. She liked it and picked it up.
"Kireba!" Lucy screamed, "Put it down before it bites you!"
"Why?" She asked.
"That snake is very poisonous. Just put it down and walk away slowly."
The snake bit Kireba's finger as she let go. She winced a the sharp bite, but walked away without the side effects of its venom.
"Kireba, are you ok?" Gray asked.
"Yea. Why are you guys worrying over a snake?" She asked.
"You were just bit by a Black Mamba, one of the most deadly creatures, and you walked away from it like you just scratched yourself with a thorn." Lucy said shocked that she isn't paralyzed yet.
"Oh, I'm immune to poison." Kireba said smiling.
Everyone's face lit up in shock when she said that. It was rare to find someone who was immune to poison even that of a Black Mamba's.
"How are you immune to poison?!" Natsu said.
"I lived around poisonous creature for most of my life. I've developed an immunity to basically all poisons and acid."
Natsu still thought it was strange as well as everyone else, but understood it a little. They started to walk again to Oak Town. Kireba found the snake again and put it in her bag so no one knew. Once they arrived at Oak Town, Erza decided that they should split up into groups of two.
"Ok, then who's partners with who?" Lucy asked.
"You go with Kireba, Natsu goes with Gray, and I go by myself." Erza said.
"What about me?" Happy asked.
"Your with Natsu naturally."
"But then it would be a group of three."
"Whatever, Happy and I are already partners." Natsu said walking of with Happy trailing behind.
"Then Lucy will be with me and Gray, you'll be with Kireba." Erza said.
"Whoever finds the culprits, has to take them down." Gray said.
The two groups split off in different directions to find the culprits. Kireba was excited to do her first job, but was afraid to show everyone her potential magic in summoning.