Yandere childhood friend GLs:
https://www.mangago.zone/read-manga/shouwaru_tensai_osananajimi_to_no_shoubu_ni_makete_hatsutaiken_o_zenbu_ubawareru_hanashi/
https://www.mangago.zone/read-manga/her_lies/
https://www.mangago.zone/read-manga/seasons_in_bloom/
https://www.mangago.zone/read-manga/after_school_love_affairs/
https://www.mangago.zone/read-manga/ubai_ai/ (short story)
Childhood friends to lovers GLs:
https://www.mangago.zone/read-manga/aoi_hana/
https://www.mangago.zone/read-manga/sasameki_koto/
https://www.mangago.zone/read-manga/our_yuri_started_with_me_getting_rejected_in_a_dream/
https://www.mangago.zone/read-manga/my_angel_childhood_friend_was_a_gal_when_we_met_again/
https://www.mangago.zone/read-manga/how_do_i_get_together_with_my_childhood_friend/
https://www.mangago.zone/read-manga/kyou_kara_mirai/
https://www.mangago.zone/read-manga/relationship_guidelines/
https://www.mangago.zone/read-manga/moshi_koi_ga_mieta_nara/
https://www.mangago.zone/read-manga/sakura_trick/
https://www.mangago.zone/read-manga/mirai_no_fu_fu_desu_kedo/
https://www.mangago.zone/read-manga/the_princess_is_now_the_duke/
https://www.mangago.zone/read-manga/tsumetakute_yawaraka/ (cheating)
https://www.mangago.zone/read-manga/kono_koi_wa_hoshi_ni_wa_negawanai/ (love triangle - boy and girl love the same girl)
https://www.mangago.zone/read-manga/jewels_m_k/ (short story)
Seasons in bloom mentioned RAHHHHHHHHHHHHHHHH!!!!!!!!!! TS IS SO PEAK!
Any childhood friends trope with yuri? Even better if the love interest or the MC is a yandere.. been getting into Love Curse (NYX XIAAAA) a lot