This anime is definitely worth a look. The seven stars correspond to the stars of the Big Dipper and each give their earthly form a particular perspective making things interesting and unique.
Hero Tales starts out as the main villain Keiro attacks the temple the main protagonist Taito lives in search of the Sword of Rule. After defeating many of those in residence, Keiro finds the Sword of Rule but is unable to sheath it. He then squares off with Taito who is able to sheath the sword. However, Keiro defeats Taito and takes the sword. Thus beginning the hero's tale for vengeance.
Along the way, Taito runs into various problems along the way to find Keiro. The empire is in a terrible state and he constantly find himself cleaning up the mess while training to get stronger to defeat Keiro.
The best part about this anime is the characters. They are fun and all bring something unique to the table. They all have their struggles at one point or another giving this anime life. Shimei is my favorite character and is fun, even though he is a main antagonist.
Many theme of friendship, family, honor, hardheadedness, and personal growth make this a good anime. The emotional depth of this anime is incredible and it really does a nice job pulling you into the characters and wanting the best for them.
However, I have two main problems with this anime. The first is the lack of action. It has good action when it decided to actually show it. There are numerous cases where a character is surround by a group of enemies and then the anime will cut to another scene, and then cut back showing all the enemies defeated. The other is when you have a character whose primary function is to keep another character from losing their temper or keeping their spirit in harmony. That is a good function to have, but that should not be their only function. Especially if the character is more than capable of handling their own in a fight (this is the case with Laila). I really hope anime will get away from doing that.
Despite the previews claiming this is an action heavy tale, which it is not, this is still a good anime. Definitely check this out, especially if you prefer characterization over action.