In both BLs, the main couple are investigating generally unsavory people together in order to collect evidence to expose them. In Doku Koi it is for criminal cases. In Ameiro it is for a gossip journal. Despite the more serious topics at times, there is still a lot of silly and light hearted moments throughout to keep the shows' tone lighter. I also feel the couple dynamics are sort of similar. Kaburagi (Ameiro) and Haruto (Doku Koi) are both familiar and more engrained in the shady side of things and use their expertise to get results. Meanwhile, Onoe (Ameiro) and Shiba (Doku Koi) are their more innocents partners who they want to protect.
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