Found this short visual novel in which the protaganist gets pulled into a wet dream every night. From what I understand, he's at risk of getting permanently stuck inside these dreams. Thats all I know, I dont read a single word of japanese but I managed to go through the entire game lol.
Most of the gameplay is just basicaly choosing "get raped" or "run" during dreams, or choosing which girl (the classmate or your schoolnurse) to be your ending during the day
Name of the game is in the title, or goes by the japanese name:
Succubus Crysis ～夢魔世界探索アドベンチャー～
There are two kisses (dont really know if they cause any effects though) in there and I wanted to upload them, but I realised theres prob already some on the internet. And ofcourse I found them, so if you dont care about the game, here they are:
First one is some plant girl about 1/3 into the game
Second one is from the classmate, who you probably already guessed, is a succubus. She kisses you before raping you and getting you stuck in a dream with her forever