Halppp

These are otome characters drawn by Futaba Hazuki.
Some of the artist works found here: http://www.mangago.zone/r/l_search/?name=Futaba%20Hazuki

You can check out the profile for these characters here: https://danbooru.donmai.us/posts/3923089

From left to right:
1) idk

2) http://www.mangago.zone/read-manga/princess_blue_rose_and_rebuilding_kingdom/

3) http://www.mangago.zone/read-manga/the_daughter_of_the_albert_house_wishes_for_ruin/

4) http://www.mangago.zone/read-manga/koushaku_reijou_no_tashinami/

5) ?

6) ?

1 & 5) I think they only has light novel, not sure tho

6) http://www.mangago.zone/read-manga/a_bellicose_lady_got_reincarnated_it_s_an_impossibly_hard_game_where_i_would_die_if_i_don_t_fall_in_love/