High School Dxd is the new anime cult series that is taking the community by storm, it appears to be a sexy comedy from the outside; but under the surface it is actually a very deep piece of storytelling. Season 2 picks up immediately after season 1, I guess the main question is, should you have seen season 1. Well it helps, but the show is so accessible that within a few hours you'll get energised with the characters and environments. Season 2 begins when Issei wakes up on a certain morning and finds Rias sleeping naked beside him until Asia arrives to wake Issei up which ends up in a hectic morning for Issei after Rias deliberately provoked Asia. Later, while having his usual school days with his friends, Issei's Dragon arm awoke forcing Issei to meet Akeno to have the Dragon Power removed.
After school, Rias and the others used Issei's house to have their usual club activity until Issei's mom interrupted and showed Issei's childhood photos. Later, while on the way home after Issei completed a contract with his new client, Issei and his friends receives an order to hunt down a Stray Devil at an abandoned factory. When questioned by Rias, Kiba gestures it off as nothing and leaves soon after, with Issei following in pursuit worried about him as Kiba reveals to Issei his purpose of living: to seek revenge against the Holy Sword Excalibur. Later at his house, Issei questions Rias about the Holy Sword and Kiba's past where he was part of a project called "The Holy Sword Project" where he was the only survivor of it. Meanwhile, two unknown individuals arrived in Issei's town.
One thing you'll notice is that this season they appear to turn down the sex factor, instead rather focusing on character development. The horny lead feels more mature and progressive for the better. The story begins with Kiba fighting against Freed who is using one of the Excalibur fragments until Freed retreats from the fight. Later, at the Occult Research Clubroom, Issei notices that Kiba is missing and asks Rias about Kiba's past where she revealed that Kiba was previously part of "Project Holy Sword", where he was one of the failed products that escaped before he could be disposed of until Rias found him on the verge of death. The episode ends as the four begin their battle.
Issei and Kiba begin their fight against Irina and Xenovia, both ultimately losing to the two exorcists who then leave the school area with Issei and Yuuto frustrated at their loss. After seeing Yuuto leave the clubroom with such frustration, Issei decides to help Kiba in his revenge against the Excalibur swords. Kiba then engages Freed in a one-on-one battle until Issei, Saji, and Koneko intervene, giving Kiba the advantage. Issei and Saji are then punished by their respective masters for taking action without permission. The fight scenes are quite spectacular and the animation really shines; overall as you can tell this is much darker season of DXD.
Back at the Hyoudou Residence, Asia greets Rias and Issei in a naked apron as Rias decides to change into one as well. The series is still erotic, is it odd that these animated characters are turning me on in a bizarre way, the animators certainly know what they are doing. Rias is one of the hottest anime female figures in history, thank you creators, you have me attracted to a fake animated character. He then introduces his boss, Kokabiel, one of the leaders of the Fallen Angels, to Issei and his friends as Kokabiel reveals his true reason for stealing the Excaliburs: to start another Great War among the Three Factions. After the Fallen Angel leader uses a small attack as a diversion, Issei and the others head back to the school in preparation for their upcoming battle with Kokabiel. Meanwhile at Kuoh Academy, Valper and Freed are shown to be inside a magic circle undergoing an unknown ceremony, with Kiba and Xenovia overlooking the situation from afar.
Sona and her team form a barrier surrounding Kuoh Academy, while Rias and her team prepare for their upcoming battle against Kokabiel, Freed, and Valper.
Meanwhile, Kiba confronts Valper and learns the truth of the Holy Sword Project and with the help of his friends from both the past and present, Kiba successfully attains his Balance Breaker, Sword of Betrayer, and together with Xenovia who summoned her Durandal, manages to successfully destroy the Fused Excalibur. The episode ends with Kokabiel confidently telling the Occult Research Club that Issei can transfer his power to anyone as Issei prepares to transfer his powers to Rias. The supernatural elements are still there, while retaining the signature horror feeling overall to the series for older fans.
Issei transfers his boosted powers to Rias who then proceeds to attack Kokabiel but to no avail. Angered by Kokabiel's insults, Issei decides to fight Kokabiel as Kiba, Xenovia and Koneko attacks Kokabiel to buy time for Issei to boost his powers. Despite so, Issei strongly states his dream of becoming a Harem King along with Rias' incentive, Issei manages to attack Kokabiel while reigniting his friends' fighting spirit.
Before the fight can continue though, the barrier surrounding the school field was destroyed by a new figure appears in the fight. Xenovia then reveals that she has reincarnated into a Devil as Rias' Knight after learning God died and apologizes to Asia for her rude remarks to her in the past.
Issei is later seen playing a video game with his client, who later reveals himself as Fallen Angel Leader Azazel, much to Issei's surprise. Overall High School DXD "new" is a darker, stronger and more mature series. It is highly enjoyable, easy to get into and addictive, we high recommend it for the casual or even hardcore anime fans.