these are my fav
http://www.mangago.zone/read-manga/hidamari_no_orange/
(the main story is only 5 chapters but there are 2 extras) http://www.mangago.zone/read-manga/kowagaranai_de_soba_ni_ite/
http://www.mangago.zone/read-manga/sweet_hour_1r/
http://www.mangago.zone/read-manga/monetary_love/
http://www.mangago.zone/read-manga/pink_to_mameshiba/
Some of these are one more than 5 but close enough
http://www.mangago.zone/read-manga/dear_signal/
http://www.mangago.zone/read-manga/akai_ito_no_shikkou_yuuyo/
http://www.mangago.zone/read-manga/keppeki_danshi_kouryakuhou/
http://www.mangago.zone/read-manga/doushitemo_yaritakute_gakuen/
http://www.mangago.zone/read-manga/chiya_s_just_an_unstable_guy/
http://www.mangago.zone/read-manga/sweet_trap/
http://www.mangago.zone/read-manga/high_school_lala_love/
http://www.mangago.zone/read-manga/kimi_towa_gokai_kara_hajimarimashitaga/
http://www.mangago.zone/read-manga/himitsu_ni_shiro_yo/
there should be some in here
http://www.mangago.zone/home/mangalist/1103164/
http://www.mangago.zone/home/mangalist/1103037/
Can anyone recommend some 1-5 chapter BLs?
Doesn't have to have romance