Adult!Henry looks about 20 years older
ipso facto Neal Nolan, Robin Mills, and Gideon Gold are all about 20 years old (as well as ~21 year old Phillip Jr, ~22 year old Alexandra Herman, and ~24 year old Roland Hood). Plus there are many more young couples who could have kids in the future (Ariel and Eric, Jasmine and Aladdin, Emma and Killian). Basically a TON of teens-early twenties characters to work with.
I EXPECT ROMANCE. I EXPECT RIVALRIES. I EXPECT FRIENDSHIP. I EXPECT ADVENTURES.