Please mods, let me know if i'm in the wrong forum

So here's the deal, i have a congress in september 2022, from the 7th to the 13th, i have plane tickes from 4th to 19th, invitation letter for the congress (7 to 13), have already a guarantee letter and the EFRS... will i'll be able to get the visa? i have to leave my papers at the embassy next week, only one thing that its going against me is that the invitation letter is from the 7th to the 13th. im planning going to korea the 13 to 19 and using my return flight just by going in transit throu narita

seems logical? would i get into trouble?