The implants react as expected.

As the energy traveled up her arm and into her breast, Samus could feel her tits beginning to swell out, her implants filling up with power. She moaned as she felt her skin slowly stretch. She knew, underneath the material of her suit, her areola were widening along with her boobs, and it turned her on. She grabbed a breast with her free hand, kneading and massaging it as it inflated in her hands. More and more they grew, the pleasure intensifying as their sensitivity increased. As they grew, the split in her suit slowly traveled downward, allowing more space for the mammaries to fill up.

"Yes, this is the stuff~," moaned out Samus. Her legs were buckling beneath her. She had no idea boobs could feel so good. She cried out as she was suddenly rocked by one orgasm, and then another. She threw her head down in a tense spasm, only to find her face buried in her cleavage.

"Oh my goodness, my tits are so big and perky I can easily reach them with my face!" she thought to herself. She rubbed her face against her skin, breathing heavily, relishing the feeling of her flesh pushing against her as her titties continued to swell.

And then the energy stopped. Her tits swelled for a few more seconds as the remaining fuel traveled up her body, and then stopped as well. Samus panted as she came down from her orgasmic high. The crotch of her suit was absolutely soaked in her feminine fluids, and sweat trickled down her chest.

"It's -hah- a good -hah- thing I only use these -hah- when I'm safe." She removed her arm from the machine and sat down, exhausted. "Missions are going to be a lot more fun, though," she spoke to herself.

She took a moment to investigate her breasts, and gasped in shock. She smiled as she saw her boobs were now as large as basketballs. They were still as round as ever, and sat so high on her chest they nearly reached her chin. It was hotter than she could ever imagine. Her suit's split now reached just above her crotch, her belly button clearly visible (to others, her boobs were too big for her to see it anymore without parting them). She traced a finger around them, noting how gradual the curve was.

"How do I look, computer?" she asked the air. She honestly had no idea where the AI could see her from.

"I'm afraid I lack the necessary circuits to accurately judge your appearance according to aesthetic standards, Samus. However, I can say that women similar in appearance to you generally get high ratings on galactic porn websites."

"Good enough for me right now," said Samus, still tired from her recent ordeal. "And how much energy am I currently storing?"

"Your implants are holding roughly one standard energy tank's worth, each. This is their current assigned maximum."

"That's it?" asked Samus, disappointment in her voice. "It's better than nothing, I suppose, but it's not much. I usually find more than that in the first half hour of a mission!"

Samus got to her feet, feeling adequately rested. She was only concerned for her protection, she told herself. She wasn't just wanting her tits to be even bigger, right? She looked down at her boobs, giving them a squeeze and letting out a quiet moan.

The AI answered her complaints, "If your breasts got any larger, they would begin hindering your combat performance above acceptable bounds. If it is your desire, you can connect your suit to the main console and raise the limit, but I caution against it. The larger you get, the more difficult it will be to move quickly and acrobatically. As an alternative option, you can install other implants to increase your energy capacity."

Samus walked up to the console and rested a hand atop one breast, sighing. What exactly did she want? Her excitement was still running high, and even bigger boobs sounded amazing. But she was a bounty hunter, and she still cared about her job. Protecting lives was a core part of her being, and larger breasts might obstruct that mission. Could she justify it with the increased energy capacity? Or she could install one of the other implants. If her boobs were so good like this, what about other parts of her body? And it could add to her total protection without hindering her movement as much. Or maybe she could find a totally different upgrade altogether. There were seemingly thousands at her disposal just here in the main console, and there was no telling how many were hiding elsewhere in the facility. Surely at least one of them could also be exciting.