Todokoki was your personal guard...he was your guard since you was 16 and he is 17 at the time...

Your father got you a personal bodyguard after you've been kidnap once...he then became overprotective and homeschooled you

Todoroki approaches you and gave you a slice of cake that he just bought from the cake shop "Here have some" He said in a cold and mature tone..even though he's just one year older than you..you can feel the different between you two