The first arc, The Soul Society arc is arguably the most exciting. This arc is from episode 1-63. In this arc, Ichigo and his friends attempts to save Rukia, a shinigami who has once saved Ichigo's family from danger and shared her (Shinigami) powers with Ichigo.
Here a lot of interesting characters are introduced from the Gotei 13 (The Thirteen Protection Squads). The Gotei 13 serves to protect the Soul Society. Each squad has a captain and vice-captain (lieutenant). Captains are highly superior and very much respected and admired by their subordinates for their strength and power. Ichigo and his pals are labelled ryoka (intruders) by the Soul Society. Regardless, they proceed fight after fight to save Rukia, battling powerful opponents, including some of the captains.
After the first arc, we enter the Bount arc, an anime-exclusive arc which has no relevance to the manga by Tite Kubo. Skip the Bount arc, trust me,and everything would be perfect:) This arc is from episode 64-109. As far as I'm concerned, this arc is filler stuff, so I skipped it.
Now, this Hueco Mundo arc or Arrancar arc, is where Bleach picks up its pace from where it left off at the Soul Society arc. One of the captains, Aizen betrayed Soul Society and retrieved the Hyogoku, a powerful item which he used to create an army of Arrancars (modified Hollows which have Shinigami powers).
This arc focuses mostly on Aizen and his Arrancars at a place called Hueco Mundo. The Arrancars are divided into several levels, the strongest one being the Espada. An Espada's strength is said to be equal or stronger than a captain's. Ichigo and the others are overwhelmed by the Espada's powers, which are stronger than anything they've fought before. After suffering heavy defeat, everyone trains desperately to improve themselves and prepare for the upcoming battle against the Arrancar. In the midst of everyone's training, Orihime (one of Ichigo's friend) is captured by Ulquoirra (an Espada) under Aizen's command, after Aizen realised Orihime's unique powers which might benefit him and his plan to overthrow Soul Society.
The Hueco Mundo/ Arrancar arc is from episode 110-167. Take note that they are several filler episodes here, from episode 128-135. These filler episodes are not connected to the original plot or storyline in any way, so it's best to be skipped.
If you have stuck with reading my review until here, I sincerely thank you. At the time of this review, I have watched Bleach until episode 167. Take note that episode 168-189 is also filler stuff.
In short, Bleach is just amazing. You can easily get so carried away by the story and fall in love with the characters. Bleach is a perfect blend of action and comedy with a hint of romance. The fight scenes are awesome and exciting to watch!
Lastly, I would like to give my praise to Tite Kubo, the person who created Bleach and to Noriyuki Abe, TV Tokyo, Dentsu and Studio Pierrot for producing the anime Bleach.
