15 [Similar Anime] Like Chrome Shelled Regios

Both in "Chrome Shelled Regios" and in "Densetsu no yuusha no densetsu", the hero is a boy, who, in the beginning, is trying to hide his past and exceptional abilities (tenken-user, alpha stigma) playing the dumb, pretending to be unintrested, slow and unskilled. Other similarities seem to be the fantastic setting, the presence of the fantastic itself (the mysterious regious and their spirits and monsters the student-soldiers are fighting against, magic), organizations of selected fighters (tenken-users, orphanage training soldier-magicians) and smaller groups of friends of the hero who are operating together, and finally (there might be more, but I will just leave it at that for now), a strong leader among the student of the academy themselves (Loss, Shion). The latter series has aired only 2 episodes yet, so I cannot really tell, but I suppose that if you like one, you might like (or at least check out) the other. ^^

Kuusen and chrome have a lot of similarities that spring to mind.
*Both the main characters are extremely powerful and branded as traitors. (In kuusen MC is kanata age) (In chrome the MC is layfon alsief)
*In chrome they live in mobile city's that move around and in kuusen they live in aerial city's.
*The city's they both end up in are known as "Academic" city's.
*Both main characters end up having to join a team that are pretty weak.
*Both worlds are post apocalyptic and overrun by giant insects.

Both have light novel source materials and focus on a cool MC hiding his untold back story and past experience from the rest of the militaristic high school and slowly showing it off as he gets into more fights surrounding a mixture of hand to hand combat, specialized weapons, and magic / kai. Also both have an interesting support cast to make up for the withdrawn personality of the MC.

Both involve an overly powerful boy who tries to hide his powers and past. They each are only 1 season and both end awfully with a lot of unanswered questions. They both leave a viewer with huge hopes for a season 2. Hope this doesn't steer anyone away from watching either though lol.

Different in many ways, but very similar in general: the strongest protagonist who initially has no interest in events around and hides own talent, but at the end begins to feel responsible and to fight for others.
In Seikishi the accent is slightly more pronounced on harem and ecchi elements, but in Regios characters development is more complex. Also both in contrast to a lot of pure harem anime have the extended duration (24 versus 12 episodes) and the high quality of the plot.

Ok so this is kind of a stretch because the settings in SAO and CSR are totally different: one being inside a MMORPG and the other a post apocalyptic world with moving cities. However they are very similar in the sense that the main characters between the two are both total badasses. Kirito being a solo player on the front lines who doesnt need any help and Layfon being one of the 7 heavenly blades or whatever in disguise at an ordinary school/city. So basically if you enjoy watching the main male lead go ham and wreck the opponents then both of these shows are a good choice. However I personally am leaning towards SAO as a better choice right now as its story seems more solid and CSR has a sorta slow beginning but if you have any free time and feel like watching someone be awesome then you should check it out.

Both series contain fantasy themes involving action, fantasy, comedy, drama, and a little romance.

Reasons why they are similar:

The story takes place in a post-apocalyptic setting, where humanity is under attack by these unidentified monsters that are attacking humans. The characters in here are mostly shielded in an area by these advance technology where the monsters won't get through. There are supernatural powers where they can eradicate these monsters when fighting them. Expect some dark moments, action, and fears around them.

In a post-apocalyptic setting, humanity have been feared by these unidentified monsters that are attacking humans. The characters, in here, usually stay in a place that is shielded around them to prevent them getting killed. To counter attack these creatures, the military used tactical strategies to fight them off and finding the mystery of their origins. Swords, and supernatural themes were used in combat.

They're both quite serious but can be funny as well and they both have mysterious characters as mains, they have a lot more in common but if it's too long you might not bother reading this so have fun XD

Both have a main character that is extremely powerful and has seen many fights who joins a group of less experienced people. The main character also seems reluctant to display their powers because of the past and they are trying to change from fighting into existing more peacefully with others.

Both are post-apocaliptic worlds with big bugs to fight ^^. The idea its diferent in both but the worlds are similar.

The Settings For CSR and ToD are very different but stories focusing a bit on the dynamics of group combat(and to an extent the fight scences themselves), weird monsters, and of course the fanservice are all strikingly similar. If you enjoyed either, give the other a few episodes and see if it doesn't have a similar feel.

Both CSR and Blacksmith have male leads [ Layfon Alseif in CSR, Luke Ainsworth in Blacksmith ] that are almost otherworldy in their combat skill. Both of them are at their best with Katana, which is a weapon in both series that is held on another level to others when used properly. Overall the series are different in alot of ways, but the simple relation in characters makes the viewer feel some nostalgia when watching one and then the other.