Fairy Tail - Season 3 - Eps 16: The One Thing I Couldn't Say
Cana finds Mavis's grave and reflects on her reasons for becoming an S-Class wizard: her father is revealed to be Gildarts, who is unaware of his relationship with her, leading the younger, timid Cana to decide to become an S-Class wizard and bolster her own confidence to reveal the truth to him. However, Cana realizes that she had also betrayed Lucy in her determination. Wracked with guilt, Cana takes the Fairy Glitter spell from the grave and uses an enchanted card leading her to Lucy as she and her friends are attacked by Bluenote. She tries to perform the spell on Bluenote, but fails. However, she is saved when Gildarts arrives and attacks Bluenote.
About Fairy Tail

Title: Fairy Tail
First Air Date: 2009-10-12
Last Air Date: 2019-09-29
Status: Ended
Rating: 7.9/10 (from 963 votes)
Language: JA
Seasons: 9
Total Episodes: 328
Network: TV Tokyo TV Aichi TVQ TV Osaka TVh TSC
Genres: Animation, Action & Adventure, Comedy, Mystery, Sci-Fi & Fantasy
Production Companies: A-1 Pictures, SATELIGHT
Synopsis
Lucy is a 17-year-old girl, who wants to be a full-fledged mage. One day when visiting Harujion Town, she meets Natsu, a young man who gets sick easily by any type of transportation. But Natsu isn't just any ordinary kid, he's a member of one of the world's most infamous mage guilds: Fairy Tail.
Cast

Tetsuya Kakihara
Natsu Dragneel (voice)

Aya Hirano
Lucy Heartfilia (voice)

Rie Kugimiya
Happy (voice)

Yuichi Nakamura
Gray Fullbuster (voice)

Sayaka Ohara
Erza Scarlet (voice)

Satomi Sato
Wendy Marvell (voice)

Yui Horie
Carla (voice)

Hiroki Yasumoto
Elfman Strauss (voice)

Wataru Hatano
Gajeel Redfox (voice)

Hiroki Touchi
Panther Lily (voice)