Title of this episode of Fairy Tail 101 is “The Black Wizard".
This week's episode focuses on the continuation of the S Class Advancement Exam and the dark-haired guy's true identity is finally revealed. Added to that, there's a new romantic couple to look forward to. The biggest revelation happened in this episode, the dark-haired guy is no other than Zeref! No one knows that he is still alive, but Zeref is one of the most powerful mages in the history of Fairy Tail. Not only that he is powerful, he is also evil. Natsu and Zeref's relation to each other is a big question to everyone, but it is not revealed in this episode. There's a speculation that Natsu is a descendant of Zeref because the only person that can defeat him is someone that belongs to his bloodline.
When Zeref and Natsu meets in this episode, the former assessed that Natsu is not strong enough to defeat him. Zeref also showed some affection towards Natsu, by telling him how strong he has become and he was crying. Natsu can also be a part of an ancient prophecy that he will be the one who will kill Zeref or he can be his son! The possibilities are endless, and that is something to look forward to.
The only thing that is certain is that Zeref is not on his own self right now. The Dark Guild has a plan of awakening the real Zeref inside him because they want to know the ultimate Dark magic knowledge. This part of Zeref is the evil one and they want it to be released again. Someone must have sealed it inside Zeref to stop the destruction. Grimoire Heart, or the Dark Guild, has an interesting group of villains and we will know them as the story continues.
Is it just a coincidence that Zeref is on the island where the Fairy Tail guild is having a training for their new mages? The Fairy Tail guild is very essential to the world at this time of chaos and they are now the last line of defence. The Grimoire Heart knows that Fairy Tail is a threat, that's why they are declaring an all out war with them. The conflict between these two guilds will definitely make this arc interesting. However, Fairy Tail has already lost two of their strongest S Class Mages, Laxus and Mystogan are gone. The only S Class mages left are Erza, Mirajane and Makarov. This training is an important event for the Fairy Tail guild, because it will prepare the new generation of mages for the upcoming war.
There's a little scene between Levy and Gajeel that will make you giggle. It's really obvious that Levy likes Gajeel, a lot. Gajeel is like a hero to her, always saving her from trouble. However, Lucy feels hurt when she learns that Gajeel only saves her for action. Gajeel's reason maybe true, but why would he always save Levy? He can save other people if he wants adventure and action. While Levy is having a small speech of how she hated Gajeel, she is also remembering all the great things he has done for her. They are perfect for each other, Gajeel is strong and powerful while Levy is very intelligent. Meanwhile, Gajeel and Levy encounter Yomazu and Kawazu and started to fight. This battle is just the beginning of the big war between Fairy Tail and the Dark Guild!