If you're looking for anime similar to Tsui, Koukishin ni Makete Shimatte Akuyaku Reijou wo Mezasu Koto ni Shita Mono no (Light Novel), you might like these titles.
Reincarnated as a character in the legendary erotic game, “Magical Explorer,” it doesn’t take long for our hero to discover that he’s been designated the unlucky side-character rather than the game’s lady-killer protagonist. Not to worry, though! Armed with his vast knowledge of the game (and a few cheats) he’ll do whatever it takes to win the hearts of the game’s heroines and emerge as the most accomplished student at the Sorcerer's Academy!
I, Maehara Maki, someone who couldn’t make any acquaintances or friends in high school, finally had someone I can hang out with outside of school. A girl. Her name was Asanagi-san. The boys in my class called her ‘The class’ second cutest girl’ behind her back. On Fridays, she would refuse her best friend, Amami, ‘the cutest girl in class’ invitation just to hang out in my house with me. Together, we played games, watched some movies, read some manga while eating junk foods like pizza and hamburgers, and chugging cola without a care in the world. To others, we may seem sloppy, but it was a precious, secret time together for Asanagi-san and myself.
"Huh? Who are you calling loser?" As the background of the class, I, Kazuhiko Nukumizu, witnessed a popular girl—Anna Yanami—getting rejected by another guy. "Even though he said we'll get married. Don't you think he's pretty mean?" "When did he say that?" "When we were 4 or 5 years old." That doesn't count, right? With this, the losing heroines like Remon Yakishio from the track and field club and Chika Komari from the literature club."Nukumizu-kun. There are two types of girls: childhood friends or cheating cats." "I see. Well, that's a bold statement." There's a fortune for those who shine only after losing. Losing heroines—the curtain to the mysterious coming-of-age story Makeine opens now!
The story revolves around Tsubaki Akira, who one day notices the anti-social transfer student Urabe Mikoto drooling on her desk while she is sleeping, and he tastes it. Eventually the two begin to date and get to know each other better.