1. https://www.mangago.me/read-manga/younger_brother_friends/
2. https://www.mangago.me/read-manga/please_teach_me_senior/
3. https://www.mangago.me/read-manga/to_you_who_kept_the_star/
(All completed. 1&3 are on webtoon app)
https://www.mangago.me/read-manga/marriage_substitute/
https://www.mangago.me/read-manga/my_muse_is_older_than_me/
https://www.mangago.me/read-manga/itadakimasu/
https://www.mangago.me/read-manga/the_newly_wed_life_of_a_witch_and_a_dragon/
https://www.mangago.me/read-manga/sincerely_i_became_a_duke_s_maid/
Recommend straight romance with a younger ml pls pls pls pls pls pls