zia !!

Not really twink but smaller top :
https://www.mangago.zone/read-manga/app/
https://www.mangago.zone/read-manga/plaything/
https://www.mangago.zone/read-manga/seiheki_strike/
https://www.mangago.zone/read-manga/saeki_kun_ni_tsunagatchau/
https://www.mangago.zone/read-manga/bitten_by_moonlight/
https://www.mangago.zone/read-manga/go_out_with_me_too/
https://www.mangago.zone/read-manga/i_don_t_need_a_dad_cupid_scans/
https://www.mangago.zone/read-manga/pamper_me_my_manly_maid/ (one of the side couples)

- https://www.mangago.zone/read-manga/aitte_yatsu_o_oshiete_kure_yo/
- https://www.mangago.zone/read-manga/sweet_trap/
- https://www.mangago.zone/read-manga/sex_sales_driver/
- https://www.mangago.zone/read-manga/abaite_sono_me_de_uncensored/
- https://www.mangago.zone/read-manga/the_dawn_split_the_night_ilovecheetos/
- https://www.mangago.zone/read-manga/hugpai/
- https://www.mangago.zone/read-manga/their_love_is_too_much_for_reality_tv/
- https://www.mangago.zone/read-manga/sir_you_shouldn_t_go_there/
- https://www.mangago.zone/read-manga/the_way_to_love_an_alien/
- https://www.mangago.zone/read-manga/iki_dekinai_no_wa_kimi_no_sei_super_pink/
- https://www.mangago.zone/read-manga/give_me_you/
- https://www.mangago.zone/read-manga/boku_no_high_spec_kareshi_sama/
- https://www.mangago.zone/read-manga/love_or_marriage/

- https://www.mangago.zone/read-manga/ghost_window/
- https://www.mangago.zone/read-manga/spinach_bouquet/
- https://www.mangago.zone/read-manga/beefy_boom_anthology_a_friend_s_tiddies_are_a_burden_to_an_otaku/

Don't break the glass work

The third ending
(One is popular but the other isn't exactly a nerd)