Five years later...
The sparking Dracku
It starts its life without any of the things most dragons have from birth. No wings, no breath weapon, and a very frail figure. It was very rare to see one of these dragons fully grown as it is very easy to kill them off before maturity due to their lack of strength. However if one of these dragons manages to make it beyond its early years they become very powerful. Their frail bodies quickly become muscular and agile. They never grow wings or acquire a breath weapon. They become insanely strong jumpers with their back legs that shoot miles away. As well as equally strong with their front legs for attacking as well.
A sign they are about to use their power as lighting begins to spark all around their bodies. Pink veins light up across its hide.
When they first develop this power sparking Dracku are prone to injuring themselves as the power comes on so quickly they do not have time to adapt to the sudden onrush of power. Once fully mature these drakes become some of the most powerful and noble creatures.
"Interesting dragon," a fifteen year old Izuku said as he closed the book and then started picking up them after having crashed into the village's library
"Seriously Deku. What are you thinking using your power all of a sudden? What if I was not around to help you" a ten year old Eri said looking at him annoyed
"I do not have to worry about that because you are here as it helps you with your own power as well doesn't it" he said.
"Do not change the subject you are just lucky your mom does not keep you tied up in the house again because of this" she said.
After getting chewed out for crashing into the building again after so long. When he was younger and still getting the hang out of his ability he crashed into things and buildings often and had to just wait until Eri got there to heal him. As the two managed to get to what they both called home, Inko burst through the door before they could even open it and started examining her son.
"Izuku are you alright? You did not break anything this time and don't require Eri to use her powers do you" Inko asked
"Nothing broke this time, Mom. It seems as if I just seemed to get distracted possibly thinking about the past at the moment given where I was" he told her
Hearing this Eri shuttered for a moment realizing that given the direction he saw Izuku falling from it would have to be the general area where the two of them met for the first time
Though before he entered their home, he started to make such that had dusted himself off properly from his sudden flight. Originally initially very skinny, Izuku has gained toned muscles over the last five years. Something that requires him to have his clothes altered and Eri to claim all his old clothes as her own. She did not want to have to spend money on getting her new clothes when they already had some that she could just grow into. A stubborn streak developed after meeting Izuku as once she decided to do something only one who had a choice of getting her to change her mind was Izuku. The same could be said of Izuku as Eri was able to get him to change his mind at times or at least listen to reason.
"Mom...Eri...I thinking of going to the mainland with the aim of becoming like All Might" Izuku said after they had finished eating dinner for the day
"I was wondering when you were going to be ready to go," Eri said
"You talking as if you are going to be coming with me," he said
"Did you think that you were going without me as whose going to heal you if you misuse your ability" she stated directing her spoon at him
"I would..." Izuku started to say.
"I am your healer," Eri said glaring at him
Inko just sighed as Izuku always did want to become just like All Might and it seems Eri wants to become one of his party members specifically the one that heals him like she always had been doing. Thanks to Izuku's ability and Eri's ability they ended up learning how to improve their mastery by pigbacking off of each other. Izuku injured himself with his and Eri healed him with hers. Both were actually dangerous abilities that could seriously cause harm to themselves and others but being together like they were. The downsides were lesser and they were able to increase their mastery over the last five years.
Iuzku has no clue what his ability is and Eri just knows that hers can be dangerous if she loses control but can not recall the exact reason as to why. She does not want to find out thus why she threw herself into learning how to control it as best she could.