Mitsu no Yoru
The younger brother, Yakou, attracts and embraces me. He is so special to me, but this sin is too heavy for me to bear. However, maybe it will worth it if Yakou can play and do as he pleases with me? - Mitsu no Yoru - Boku no Pink - Ichioku no Koi Mamotte Agemasu special chapter Vol.1 Ch.5 Read in this order: Mamotte Agemasu, Ubatte Agemasu (in manga: Akuma na Motokare Vol.1 Ch.3), Shibatte Agemasu (in manga: Kareshi Wa Doberman Vol.1 Ch.4)
Yacchimaina!!
Summary from MyAnimeList.net Yacchimai na!! Chisa's an ordinary girl who finally confessed to the school prince and got the man of her dreams. But what is he hiding from her that'll turn all the girls away from him?! Will she be like them or will she keep her love for the prince? Icchimai na!! (イっちまいな!!) Mousou Lolipop (妄想ロリポップ) Baby Rondo (ベイビー輪舞曲〈ロンド〉)
Iinchou no Himegoto
Ayano, the committee chairman got drunk at a ballgame after party. The next morning, when she came to, she finds herself in Kagura-Kun's bed! Kagura-Kun, who is in the same class as her, is the 10th head of the famous Kagura lineage yakuza. Having had one night stand with someone so omnipotent, Ayano can’t help but feel anxious. What should Ayano do?
Life Is Short, Delinquent Youngster, Love!
Summary from MyAnimeList.net If you don't date her, you'll die! That was the prediction made to that delinquent boy. but what will be his destiny...?
Houkago Kiss
Summary from MyAnimeList.net Houkago Kiss (放課後キッス, After School Kiss) "The person who does the worst on the next test must accept a dare, he has to go out with Yamashita Fuyu" This time its Minato Sakurai to do the dare. The infamous "Do and Drop King" Having heard the dare being made Yamashito still eventually goes along with it, can any good possibly come from this? Ura Houkago Kiss (裏放課後キッス) - Bangaihen Tenshi wo Produce (天使をプロデュース, Making an Angel) Sayaka Sunohara is a high school student "and" a talent scout. She has spotted "Arashi." After cleaning him up he is just perfect for the new "Angel" campaign. But only Sayaka knows (belatedly) that he is also something of a "devil in disguise." Angel or Devil, Sayaka will have her hands full! (Story was meh) Kikoushi-sama Lock On!! (貴公子サマLOCK ON!!, Young Nobleman Lock On!!) A cute story of a dumb girl and the mean Student Body President that she fell in love with. Wanting to be close to her prince, she decided to join the student council, ending up being the janitor and was called exhausted by the President himself! find out how Seto Iori managed to "lock on" her prince.
Akuma na Motokare
Source: MangaUpdates Ubatte Agemasu - Onizuka descends! A super sweet love story! Read in this order: Mamotte Agemasu, Ubatte Agemasu (in manga: Akuma na Motokare Vol.1 Ch.3), Shibatte Agemasu (in manga: Kareshi Wa Doberman Vol.1 Ch.4) Also includes two side stories: Fake na Kanojo Akuma na Motokare (Devil Ex-Boyfriend) Airi and Keina Kiryuu used to be a couple when they were in middle school. Because she had felt hurt and used by Keina, Airi decided to run away from the past and move on with another guy. Mutou was nice to her when she entered high school, however her past suddenly begins to return and haunt her. What will happen to these three people?
Honey Buddy
Being loved by new era yankee and old-style yankee, a love triangle. It's troublesome for being popular (only among yankees though). A funny love comedy!
Bakusou!! Love Attack
The stories are very bubblegum considering the delinquent, yakuza, or gang subject matter. That part's almost like an afterthought.
Mamotte Agemasu