Physically fragile
- http://www.mangago.zone/read-manga/dekichatta_shitsuji/ (heart condition)
- http://www.mangago.zone/read-manga/puchitto_hajiketa/ (asthmatic)
- http://www.mangago.zone/read-manga/houyou_jikken/ (sickly and fragile)
- http://www.mangago.zone/read-manga/ano_koi_no_tsuzuki/ (weak and sickly)
- http://www.mangago.zone/read-manga/suki_da_nante_ienai/ (weak and sickly)
- http://www.mangago.zone/read-manga/koi_wa_maiorita/ (weak and sickly)
- http://www.mangago.zone/read-manga/psycho_young_dream/ (mental)
- http://www.mangago.zone/read-manga/hanazono_no_kioku/ (mental)
- http://www.mangago.zone/read-manga/bannin/ (mental and sickly)
Any manga/manhwa with fragile uke.