
not all of the FL here are shy but they're not the annoying tsundere's either. all of them are fluffy so i think you're gonna like them.
Yamaguchi-kun wa warukunai
http://www.mangago.zone/read-manga/yamaguchi_kun_wa_warukunai/
Yubisaki to Renren
http://www.mangago.zone/read-manga/yubisaki_to_renren/
Koori Zokusei Danshi to Cool na Douryo Joshi
http://www.mangago.zone/read-manga/koori_zokusei_danshi_to_cool_na_douryo_joshi/
Kuki ga
http://www.mangago.zone/read-manga/kuki_ga_yomeru_shunnyushain_to_buaiso_na_sempai_no_hanashi/
Natsuaki-kun wa Kyou mo Kokuhaku shitai
http://www.mangago.zone/read-manga/natsuaki_kun_wa_kyou_mo_kokuhaku_shitai/
Mobuko's Love
http://www.mangago.zone/read-manga/mobuko_s_love/
Hananoi-kun to Koi no Yamai
http://www.mangago.zone/read-manga/hananoi_kun_to_koi_no_yamai/
I can see that she's especially cute.
http://www.mangago.zone/read-manga/i_can_see_that_she_s_especially_cute/
Paperbag-kun is in love
http://www.mangago.zone/read-manga/paperbag_kun_is_in_love/

I could never like tsundere types to be honest. The only well written tsundere is nanamin from jujutsu kaisen,cause he realistically written and has beautiful character depth. Most tsundere esp girls yell,hit and blush while doing either or both at the same time. You need a good mangaka to pull a good tsundere character that MAKES SENSE. I never liked misaki even though i wanted to like her,i just loved the male lead lmao.
anyone have recs similar to this? shy and happy girls instead of that annoying tsundere trope where she hits the guy every other chapter