Araki Hirohiko manga
Knights is a shonen manga tale about squire Mistletien, called 'Mist' for short. Taking place in a medieval world in which the church and her representatives are burning people en masse on suspicion of witchcraft, Mist and his organization are taking a stand against the church and the 'Saints' who are perpetuating the witch hunts. Mist is feared and hated by the village-folk because of his appearence, wearing a mask to disguise himself and going by the moniker 'The Black Knight.' He travels with Euphemia, a young girl who is as expert with mixing potions and poisons as Mist is with a sword. -Bakaupdates BH007: This Manga cannot be strictly classified as a historical manga because it's not actually set in a true historical era, but the political issues covered, which include Religion, Anti-Theocracy-ism, Racism etc allows it to be classified somewhat as a historical manga. The manga does cover various somewhat mature "themes" but touches only on what is neccessary with almost nothing graphic or disturbing actually shown.
Meet Takeru, an ordinary boy who's always bullied because of his lack of self-confidence. What will happen when one day two mysterious girls show up in his room seeking shelter from a group of blood-thirsty thugs? Discover the changes in Takeru's life after meeting two girls that are definitely more than what meets the eye in Bakuretsu Tenshi. Alternative Desc: The year is 20XX. Under a Maintenance of Public Order Act, carrying firearms has been permitted to a restricted few. Tokyo has been converted, including major districts such as Shinjuku, Shibuya, Roppongi, and Akihabara. Everyone now suffers a life of oppression and the threat of violence. A mutual opposition in the underground plans to rebel against this malevolent syndicate. However, the people, and their names, as well as their occupations remain unknown. The main characters are... Jo, Meg, Sei, and Amy, four girls. Being energetic teenagers with first-class courage and skills, anyone who stands in their way will be dealt with. The gunfighter`s way. Summary from AniDB