The Prince is the one who give it. The imperial secret maybe thr e MC family is part of royal family, i guess. It's making all sense why current imperial family is hostile with MC family because they also have legitimate line of blood and succession if they want to take the crown
tbh i was expecting for a usual isekai story but for some reason i find it heartwarming that the mc sticks with the same people he spent time with the first time he came to this world
urgh i cant wait for the next chapter, its a slow life filled with heartwarming scenes and cooking is another bonus!!