She is in her late teens if i remember rightly...
Sorry, I have not heard of a girl Called Kira on Professor Layton However, there is a girl called Katia.
Anton from Professor Layton and Pandora's Box is actually 70 years old.
Anton and Layton fight a duel in the Great Hall, but during the fight the castle begins to crumble and fall down, Luke, Layton, Anton and Katia escape to the outside, whilst outside Anton reads a letter he found inside the Elysian Box from Sophia who was his one and only love and the Grandmother of Katia, explaining why she left him. At long last he understands her reason for leaving and realises he needs to get to know his Granddaughter Katia. Professor Layton and Luke get on a train which is leaving Folsense waving to Anton and Katia as they go. The final message is "To be continued"
Yes, Professor Layton is single, he has always loved Claire, she was his old Sweetheart, Unfortunately, she dies in an accident.
He is 37
Puzzle No 29: How Old? Professor Layton & the Spectre's Last Call. Answer = 6yrs, 6yrs and 1yr old.
The name of Professor Layton 5 is Professor Layton and the Mask of Miracles
she is 43
87
Information on Character profiles etc. Please see below for link to Professor Layton and the Diabolical Box Characters.
Puzzle No 29: How Old? Professor Layton and the Spectre's Call. Answer = Nat is 1yr old, Kat is 6yr old and Pat is also 6yr old.
In chronological order: Professor Layton and the Specter's Flute/ Devil's Flute Professor Layton and the Eternal Diva (MOVIE) Professor Layton and the Mask of Miracle (only for 3DS) Professor Layton and the Curious Village Professor Layton and the Diabolical Box Professor Layton and the Lost Future/ Unwound Future In order the games/movies came out (in UK): Professor Layton and the Curious Village Professor Layton and the Diabolical Box Professor Layton and the Lost Future/ Unwound Future Professor Layton and the Eternal Diva (MOVIE) Professor Layton and the Specter's Flute/ Devil's Flute Professor Layton and the Mask of Miracle (only for 3DS) There is also a crossover game that might be coming out where Level-5 (for Professor Layton) and Capcom (for Ace Attorney) join forces in Professor Layton VS. Ace Attorney (this game is only for 3DS). Hope this helped, and happy puzzle solving! :)