Watersports

Ch. 1 Uke loses control of his bladder after several intense orgasms.

Entire manga dedicated to watersports kink

Ch. 13.6 Uke teases and edges Seme before riding on the Seme. Seme ends up peeing while inside the Uke.

Ch. 13-14, 22-24*

Ch. 118
Ch. 123
Ch. 125-127
Uke peeing in Ch. 126
Ch. 131-133

Alpha x Alpha

C.11, 12*, 13 Peeing while overstimulated
C.19, 20
C. 23, 24

37-39* uke cums and pees while getting fucked
55-56
60-61

Ch. 3 - 5 (Uke pees while being fucked in 4)

Front hole toyed with until he squirts