If you're looking for anime similar to Love Plus: Kanojo no Kako, you might like these titles.
In twelve cities, twelve different girls will experience love, heartache, and the joys of their lives. While one has a chance encounter on a train that leads to a brief but brilliant friendship, another performs meaningful ballads with her band. A violinist wishes for nothing more than to find a man she can love, and another pines over the one who got away. Each girl, through thick and thin, will feel what it’s like to truly care about someone.
The story is set at Seitei Gakuen, an elite private academy that teaches every level from kindergarten until college in Tokyo. A new female teacher named Yūri Minami is starting her second year of teaching here, and she is now moving up from teaching middle school students to the assignment she had sought after: grammar for high school students. Unfortunately, she gets assigned to "Class X," an infamous group of seniors; it is said that all of their previous teachers have retired due to ulcers or neurosis. Minami must try to reach out to these students and get them into college.
In Debut, each standalone episode revolves around a group of friends: Aki, Saori, and Itou. First, shy Aki falls for the cute Burger Joe employee... but does he like her back? Also, the girls reunite 10 years after burying a time capsule at the local elementary school. However, the capsule contains not three, but four boxes! Who is the fourth person? Only time and reminiscence will tell...
A commercial for volume 7 of the manga Insomniacs After School, published by Viz Media.
Fuguno Masuo is a person who doesn't have much luck with the ladies -- mildly put. All through high school and college, he has failed to have a girlfriend, and when he is foretold by a fortune teller that he'll never, ever get one, he is utterly crushed. But when he meets the beautiful Nagisa, his heart is set in motion for the first time. However, he'll have to compete with the charming and handsome Kaizuka, and the rich real-estate broker Kujira…
Before Kyoko became the manager of Maison Ikkoku, she had an unconventional courtship with her high school teacher, Soichiro Otonashi. With a heavy heart, Kyoko remembers the brief time she spent with her first love and first husband.