The next day Izuku and toga decided to spy on heroes in the hopes of gathering more quirks. They both ended up finding all might while he was doing hero work. And while he was fighting a villain. Izuku and toga were able to land a hit on all might and escape undetected. They both could feel a rush of power flowing through them. as they both gained all for all. This power flowing through them merged with all of there quirks. It felt as if they were both now immortal and the true power of there quirks would awaken someday soon. And it seems they both are able to handle a good amount of power from one for all. Later they were able to find stain without being noticed by any camera. or even by stain himself. Izuku and toga decided to kill stain because by his own ideology. He's a hypocrite. And he might get in the way of both of there plains in the future.

They both transformed into a villain they could use and made it look like a group of 2 criminals somehow killed stain. Afterwards they both drank some of stains blood that they gathered from the fight. After they both went home cleaned themselves up and went to bed. It was shown on the news that stain was killed by a couple of small time villains who lost there families to stain. According to the medical report stain was stabbed in the heart 12 times and stabbed in the neck twice. The weapons are suspected to be knifes. Stain's followers were deeply angered though others see his death as poetic. Though only toga and Izuku knew the deeper irony in what happened. Inko on the other hand wasn't sure how to feel about what happened to stain. Though unknown to inko Stain's killers were living in her house.

After all. Izuku didn't want inko involved in his and toga's vigilante work. And it was not that easy to convince inko to lie in izuku's quirk registry when he got a quirk. He had to cleanup Dagoba beach starting the day after the quirk registry until it was completely clean. Thankfully he was allowed to have toga help which effectively split the work in half. And technically they both weren't told not to use their quirks. It was for this reason that toga only was able to be trained as much as she was. After all. They both were on a time limit to complete this job and had to get a schedule setup. Thankfully by focusing one for all throughout both of there entire bodies. Along with being able to store more of the energy from one for all. It gave just enough control along with enough strength and speed.

To completely clean Dagoba beach with around a few months remaining before the start of ua. It helped that Izuku and toga had inko's telekinesis quirk before they copied one for all. With such an improvement to inko's telekinesis quirk it was now currently with a citywide range a weight limit that seems to likely be equal to it's range and was almost able to work on the biological level. Though toga and Izuku were able to figure this out on their own and didn't want to go to a quirk doctor unless they had absolutely no choice. After they completed the work that was cleaning Dagoba beach they showed inko they were now complete. inko was happy knowing they'd keep there word but still wandered why Izuku didn't use the truth about his quirk when it was registered.

But as the time went by after Izuku had his quirk registered. Inko began to get suspicious of what the reason was. Eventually she realized Izuku and toga were out later than they should be on the night of stains death. It suddenly made sense why he didn't want the truth out about his quirk. They both secretly became vigilantes. although a part of inko wanted to talk about this with Izuku and toga. Deep down it made sense why they didn't tell her. They didn't want her involved with or connected to any of there crimes they might commit. So for izuku's and toga's sake. She pretended not to know. But now felt like it was a mistake for making Izuku go to the quirk doctor because he could have learned those details on his own.

Currently Izuku and toga began working on figuring out why they both felt immortal. As they were making connections with what it could be. They both soon came to a conclusion: Izuku "toga I think we both figured it out. The life force quirk doubles our lifespan. The regeneration quirk was nearly at the point where it prevents the degeneration of cells. They mostlikely were enhanced from one for all. In theory the regeneration quirk would have been enhanced to the point where regeneration of bones was possible which would mean biological immortality. Furthermore. It would have been likely to be capable of regenerating our skulls along with any other important limbs. In addition to this. The life force quirk would have at least become a mutation type or multiply our lifespan more than twice. but in either case they seem to have mixed because of one for all. because of this combination neither of us can access the form that shows our true age, in other words life force and regeneration were combined which resulted in the first 'true' immortality quirk"

Toga "I agree. Though if I'm not mistaken there is still a certain amount of improvement that could be done with stuff such as potentially improving regeneration speed. Or maybe reduce what is required to still be able to regenerate" Izuku "valid points. But regardless we are still immortal in 2 ways. And perhaps with other regeneration quirks added it will do that". And just like that. They decided to call themselves the immortal duo