The "bad guy" / guilty party's PoV

MC : Obsessed, possessive, desperate. Seme

MC : Possessive and twisted. Seme (Ao)

MC : Mindbreaking, love/hate. Uke (Takumi)

Additional chapter: https://myreadingmanga.info/ogawa-chise-ibitsu-na-kakera-14-sai-distorted-pieces-fourteen-cn-eng-tran/

MC: narcissistic-sadomasochistic disorder. Uke (Hagiwara)

Hagiwara (a common man) uses Takagi's (yakuza boss) obsessive love to have his own thirst of pain fulfilled, then quickly betray him as Takagi becomes more tired, emptier and sadder (cos he's not a sadist & his love is clearly unrequited), then goes to abuse the innocent 'new toy' he found, before realizing he needs Takagi's love and chasing (narcissism).

MC : Bully, abusive, homophobic. Seme (Asaichi)

Second couple ch.3-7
MC : Uses the uke as stress reliever, cheater (has a fiancee), violent. Seme (Hayato)

Omegaverse. Story of Hayato's ex-BF, Shichiku who uses omegas during heat to release stress, deceives another omega boy Nagisa.

Chapter 4 (read the rest first)
MC : Obsessed, Coercive sex, Subjugation by oppression. Seme (Akaya)

Ikurou's younger twin, Akaya, distanced himself from him, and has kept below average grades for the last 5 years, since the day he tried to touch Ikurou. When Ikurou finally snaps, Akaya just casually bet he will surpass his older twin in grades, in exchange for a "reward".

Chapter 1
MC : Jealous an Possessive -> Blackmail. Seme (Jun)

When his brother's friend, Yuuya, starts to tutor him, his patient nature begins to get through to Jun. When Jun realizes Yuuya's feelings for Ryou, jealousy gets the better of him.

MC : Obsessed, possessive, rapes his brother. Seme (Akio)

Pairing: Chaz Forty x Donen
MC : Yandere, Mind-break, Abuse, Rape, Drug use, Confinement, Obsessed w/ his brother. Seme (Chaz Forty)

Chaz Forty's obsession for his brother and what he did to keep him for himself was found out by Donen. But denouncing the truth is not an option.