Age 757, 25th May 

In West city hospital, there was loud scream went through the delivery room in the hospital. Bulma sitting against the wall on the bed, as she was struggling to give birth to the baby. She'd been prepared this moment to give birth but it's giving her more painful to give birth. Her mother try calm her down as the nurse deliver her baby  

"Alright Ms. Brief, I can see the head now. Give us a big push." The nurse who encourage Bulma who was in pain, "Just one more and you'll be done."

"I can't!" Bulma screamed as her face scrunched up in pain.

"Yes, you can." Mrs. Brief said softly as she grabs her hand. "You have to. Please, just push." She encouraged.

Bulma looked at her as she tried to catch her breath and push it harder as her scream stopped. She hears the screams from her baby who been quickly wrapped around in a blanket and held by the nurse who tried to shush the baby but she scream something.

Bulma saw her child has a tail, she was exhausted and grab her child from nurse who is shock. She look at her child's face, his face snuggle the blanket and fell asleep. Bulma is going to die that her child being cute. Her mother is so proud of her for being strong as Dr Brief storm in and huddle her. 

" I'm sorry for being late because the meeting." Dr Brief apologies to his daughter. 

"No dad, you just came in time and said hello to your grandson." Bulma show the face of her child who was deeply asleep and Dr Brief was happy to be a grandfather. He hug his wife as she smooth his back, they are happy.

"Well you got through it and that's all that matters." Dr Brief smiled from the other side of the room and look at the child strangely, "I do have one question through dear." 

Bulma tried to sit up, her mother held her up as she struggle herself, "Yeah, what's that?" She asked her father.

"Well... I can't help but wonder..." Dr Brief cross his arms, treading cautiously through his daughter's trigger points, "...who the father is? I mean he doesn't resemble you at all! Even Yamacha is not the father of the child since you broke up each other." 

Bulma flinched at her father's words and brings the flashback. But she shook her head to forget the memory.

"His skin's different to yours, he's got black hair." Dr Brief continued, "...And he has a tail, which terrified the nurses and doctor!" A loud gasp came from Mrs Brief as a thought crossed her mind. "Oh, you know who else had a tail, don't you?" 

Bulma was quick off the mark, "It's not Goku. Trust me if it been I would definitely not be telling you both and I don't know who the father is. Plus Chichi would react beside he's a married man and I'm not kind of woman."   

"Now now dear, calm down or you'll faint." Mrs Brief calmed her daughter, "The tail looks adorable!" 

Bulma look at her son as his tail wrap around her arm and she smiled at him. "I think I got name for him."

Dr Brief's head lightened up,"What name will suit for him well?

"Zen..." Bulma said as Zen giggle, when he heard the name. 

"That's a wonderful name and what will happen when he grow up." Mrs Brief asked, "Doing adventure like you and Goku like bravery?"

"It will be wonderful to have adventure like having new friends like you dear." Dr brief smiled to her daughter. 

"Of course, just like Goku and the guys." Bulma smiled and thinking in her thought,"...And he'll never come back for him, if he does. I won't let him take away you Zen, no matter what!" Zenopen his eyes and smiled at his mother.