After I got them them to settle down I began explaining my plans. " Makima, you are going to help manage my family business and help get me home schooled, sakuya you are the head maid, I will get you more help later." She nods as I continue speaking "for now I'm going to the dungeons to train". I send the an invite using the party system before getting up and entering the dungeon. As soon as I entered the dungeon I realized it was one with the slow zombies, causing me to smile at how easy it would be as I create holy and light magic skills before I start fighting the zombies.
Timeskip: Three days have passed and I quickly mastered the holy and light magic. I also sold all of my loot and bought a sacred gear extractor and finder. I went to school and used the finder on Issei, determining that indeed he has a sacred gear, as I the used the extractor and extracted it. I made sure to get a sacred gear extractor that safely removes the sacred gear without killing the original host. The next couple of days have passed as I turned everyone in my group into angels. I also finally was getting home schooled and was blowing through my school work with ease. 'in a few years I should have mastered all the elemental magics and be at 10 wings' I thought as I was making my schedule for the next few years. 'the first half of the day will be spent doing school while the second half will be spent grinding in the dungeons'. As I thought this I was currently writing down my schedule as I handed it to Makima. "This is a pretty good idea master, but may I ask why you split your schedule like this" she asked as the others look at the schedule as well. "It's simple I already went through highschool before so I'm going to be rushing the middle school and highschool, and then I will take my time with college stuff" I said to them. "As for half of the day being dedicated to training, that's because I want to be at least at 12 wings, seraph level when I go back to heaven. I also want to get back to heaven before this worlds canon starts so I can strengthen and prepare heaven for the war against the khaos brigade". As I say this the other's nod the heads in understanding as I tell them, " now you guys need to use the dungeon function to train your Angel powers, if you guys get to 12 wings I will give you a heavenly domain". " Don't worry we will make sure to reach 12 wings by the time we are ready to go to heaven" they said in unison. After that we began our preparations as we also start our new schedules. I was ready to began my multi-year grind, and so were the others.