Hanoka

Both series is set in an (post) apocalyptic world, where human society has been destroyed. Both series shares a 'roadtrip' style boy meets girl love story narrative where a mentally depressed meta-human girl connects with a human boy with extraordinary powers to fight off giant mechanical enemies powered by biological energy (?) Both cast of Kemurikusa and Hanoka shares a 'Leaf' motif. Both series seems to shares a significant inspiration from the works of Hayao Miyazaki, especially Naussicaa of the valley of the wind. Both series utilises Indie-animation quality CGI, since both Tatsuki and Morino inherited their style from their amateur backgrounds of Japanese Web Animation. Both Series are based on the creator's web animations, in some ways. Both series is backed up by a producer who is planning to kick-start the new methods of creating anime. Last but not least, both creator has participated in the majority of roles, technically making both anime being made by 'one people' with several backups The major difference is that, Kemurikusa is a complicated yet interesting series, whilst Hanoka is a cliched sci-fi war story with abysmal flash animation and voice acting. read more 

both are top quality masterpieces of the highest caliber mars of destruction and honaka are both incredibly cliche sci-fi stories about alien invaders. if you "enjoyed" mars of destruction you'll probably "like" hanoka as well. there's a similar air of mediocrity about each of them 

Both: Cringeworthy CG with terribly predictable plots. If OC fanfictions could come to life. These two are it.