Brave Witches

-Both are military anime involving mainly girls; -Both have a platoon of cute girls fighting to protect the world; -Both have a little of fanservice; -Both have a focus on a military equipment: Naval ships (KanColle) and Planes (Brave Witches) 

For some series, the similarity is super niche, such as in the case of these two shows of girls being weapons, yet it's the kind of niche that if someone likes that particular niche, they might find themselves wanting more. In this particular case, we've got a theme that falls into the crackfic genre, which is considered to be an easy genre to write yet the hardest one to get right, which in turn explains a lack of series where there are girls who can, in some shape and form turn into weapons. Okay, so yes - in Brave Witch, they don't literally turn into weapons and instead gain animal features, carry their weapons, and attach to their leg's propellers. However, it still has the aesthetic of the girls becoming weapons. On top of this, there is the drama between the characters that goes on in both series, but if one of these Anime is someone's nitch, the other may be as well. read more 

How many series do I know where the main characters doing the fighting are all girls? Not many, to be honest, and I know that in the case of Girls & Panzer, it's a situation where there is really no conflict and simply a war game, yet in the girls training in Brave Witches, there is indeed an element of war games going on. I also can't forget both series do have a soft slice-of-life tone to what is going on plot, with things such as the interactions of the sisters in one and school life in the other. Actually, school is another element they share to some degree between these two series, not to mention having characters which, at least for me, drew me into the slice-of-life elements between the characters in each series. read more 

A spin off of the main series, i my opinion is in some case better. 

In Qualidea Code u get unknowns here in Brave Witches u get Neuroi and why this had similar supernatural beings here? and tbh 10 Witches vs 6 teens with thier "world" abilities? and also the MC's in these 2 shows are different either in Qualidea you get a lazy-like male MC while in Brave Witches you get a female MC who places her sister's position as a witch but she weak from the start and she will get stronger someday and here's the diff in Brave Witches the setting is in the alternate earth in WWII while in Qualidea a post-apocalyptic one but another diff is the powers in QC are called world while in Brave Witches they had striker units plus the witch abilities and guns and if u want a more better animation quality and action and Fanservice go for Brave Witches which is a follow-up to Strike Witches and if not go watch Qualidea which has bad animation and less action and fanservice and i won't stop you read more