Please help

http://www.mangago.zone/read-manga/sono_koi_ni_wa_wake_ga_aru/
http://www.mangago.zone/read-manga/honto_yajuu/
http://www.mangago.zone/read-manga/kore_wa_koi_ni_fukumare_masu_ka/
http://www.mangago.zone/read-manga/otona_chan/
http://www.mangago.zone/read-manga/otona_keikenchi/
http://www.mangago.zone/read-manga/bicchi_na_neko_wa_koukishin_ni_katenai/
http://www.mangago.zone/read-manga/koibito_kijunchi_dj_u_know/

http://www.mangago.zone/read-manga/tsumibito_no_kiss/uu/tsumibito_no_kiss-chapter-3/6/ (oneshot ch, the 2 semes are father and son competing 4 youngest son ^^)

http://www.mangago.zone/read-manga/sex_pistols/ (bear and panther fight 4 uke, its been a while since I read and currently looking at the comments if you find a really good place to stop go a head)

http://www.mangago.zone/read-manga/teiou_no_amai_wana/ (starts around ch. 2 or 3 depending what you consider compition)

http://www.mangago.zone/read-manga/pet_oshigotochuu/ (uke praticly has a harem ^^ the guys like intervining ^^)

http://www.mangago.zone/read-manga/sore_wa_yappari_ai_kamone/