Help find this manga

Hi
I am looking for a fantasy bl manga(i only read the first ch)
It's about a boy in a magic world ,he use toothpick as a magic wand .he can't use magic very well Although his father is one of the school's magic teachers Which made everyone think he was adopted,he didn't know that the nature of his magic was very rare.(Old cursing magic ) he summoned a child by mistake and went to fight a dragon to prove his talent with the little boy .in the end of the chapter Both of them survived the fight against the dragon and discovered by chance after accedently kissing the boy that he was a young prince from another country . (Kissing him is the way to break the curse)
Please help me find this manga i have been searching for a long time and couldn't find yet （/TДT)/