Painter of the night
Pearl boy
https://www.mangago.zone/read-manga/don_t_cry_sunbae/
https://www.mangago.zone/read-manga/papa_datte_shitai/
https://www.mangago.zone/read-manga/tadareta_koi_ni_wa_itashimasen/
https://www.mangago.zone/read-manga/kousoku_syndrome/
https://www.mangago.zone/read-manga/ten_count/
https://www.mangago.zone/read-manga/hanagara_tsumi/
https://www.mangago.zone/read-manga/itonaga_kun_no_koi_no_ito/
U will find many mangas like this in this tag -. https://www.mangago.zone/tag/Innocent%20uke/
Recommend me a Japanese bl where there’s a huge size/height difference and the uke is a softie who cries easily