piyo

https://www.mangago.me/read-manga/honey_lemon_soda/
https://www.mangago.me/read-manga/busu_ni_hanataba_wo/

https://www.mangago.me/read-manga/komi_san_wa_komyusho_desu/
https://www.mangago.me/read-manga/kageno_datte_seishun_shitai/
Also you could try looking through the tag as well Hope it helps!
https://www.mangago.me/tag/Shy+female+lead/

https://www.mangago.me/read-manga/mobuko_s_love/
https://www.mangago.me/read-manga/this_boy_in_class/
https://www.mangago.me/read-manga/hinata_no_blue/
https://www.mangago.me/read-manga/mikansei_demo_koi_ga_ii/
https://www.mangago.me/read-manga/kimi_no_koe/
https://www.mangago.me/read-manga/momose_akira_no_hatsukoi_hatan_chuu/
https://www.mangago.me/read-manga/the_ayakashi_hunter_s_tainted_bride/
https://www.mangago.me/read-manga/patissier_san_to_oujo_san/
https://www.mangago.me/read-manga/sakura_wa_watashi_wo_sukisugiru/
https://www.mangago.me/read-manga/kimi_to_barairo_no_hibi/
https://www.mangago.me/read-manga/renai_daikou/
https://www.mangago.me/read-manga/hatsukoi_maze/
https://www.mangago.me/read-manga/kimi_no_yokogao_shika_mirenai/

Have you read any of these? (≧∀≦)