Possessive

Stalker inserts himself into the life of his stalk-ee. Stalk-ee cannot confront so ends up putting up with it.

Guideverse. Guide is isekaid and tries to change the story by avoiding the main S level Esper. However, the Esper gets him in his sights after all, and guide tries to survive him.

Royal alpha who doesn’t understand emotions wants a defective omega. Others disagree and even the omega runs. Possessiveness

He’s a mafia heir. The other is a lawyer. The lawyer needs help and the mafia heir offers to help. With forced possessiveness, misunderstood emotions and a smidge of kidnapping.

MC wakes up as an angel after he dies. They have to go into dungeons and "conquer" targets to get love points to live as Angels. He is also trying to turn the angel he inhabits life around as well. Lucifer takes notice. MC slowly develops feelings for Lucifer and Lucifer becomes quite possessive, in all the lifetimes.

Male "bride" doesn't want to marry a Male Dragon. Dragon likes his defiance and pursues him. Mostly smut.

MC is hopelessly in love with his famous friend and let's himself be used and exploited by that friend for 6 years. When he's finally had enough and starts to think for himself, the famous friend realizes what he is losing and begins to get overly possessive.

Secretary and Boss. Sec loves the Boss. Boss finds out he's gay and they start having a "no emotions" relationship. But the Sec still wants the Boss. When the Boss finds out, they cut ties, but not for long. Eventually, the Sec tries to move on, but now the Boss has feelings and pursues. Minor confinement later on.

Esper/Guide verse. Guide is stuck out in the wild and a random S rank Esper from a rival group finds and saves him. Turns out he can Guide anyone and his own base has a purpose for him that isn't good. Esper wants to keep the Guide. Quick read.

Rich kid "sponsors" a violin prodigy because he wants him. Prodigy becomes a bird in a cage type victim. Another kid shows up at a school with the idea to rescue him. Original rich kid is possessive and figures he would just break his "toy" instead. Happy Ending.