Universe created by Miyamoto Kano by telling stories of different protagonists interacting with each other as they are dealing with everyday life struggles and love. Realistic in depicting ambiguous feelings, dilemmas, imperfections and seemingly small choices impacting whole lives. Recommended for audience seeking emotionally mature and realistic reading experience.

From tvtropes: The Rules Universe consists of a series of yaoi stories created by Kano Miyamoto, which mainly revolves around Hikaru, his love interests, and friends. Hikaru's high school friend and love rival Ryuu debuts in Please, while Hikaru himself debuts in Kiss. Hydra and its doujinshi revolves around Ryuu, Hikaru, and Hitomi and their high school years. Lovers and Souls covers the story of Hikaru's prostitute friend Tooru and Tooru's sempai, Matsuoko. Rules and its doujinshi focus on Hikaru, Yuki, Tooru, and Atori.

**Timeline: **

1. Please (ch5) {R}
2. Rules / Hydra: Short Stories (ch1-3)

• Kiss {R,HT,H}
• Kiss After {R,HT,H}
• Skies {R,HT,H}

3. Hydra (ch 1-6)
4. Rules / Hydra: Short Stories (ch4)

• Heavenly {R,HT,H}

5. Hydra (ch 7-8)
6. Hydra dj - Blue Film First {R,HT,H}
7. Hydra (ch 9-10)
8. Hydra dj - The Days Before {R,HT,H}
9. Rules / Hydra: Short Stories (ch5)

• Real Things {HT,H}

11. Rules dj - Hello Again {HT,H}
12. Lovers and Souls (ch3)

• Sleeping Beauty {M,T}

13. Lovers and Souls (ch1)

• Lovers and Souls {T,HT,S,M}

14. Rules / Hydra: Short Stories (ch6)

• Fragile {T,HT,S}

15. Lovers and Souls- (ch2)

• Vanity

16. Rules (vol 1 - 3) {HT,T,Y,A,H,S}
17. Another Rules Story (Novel) {T,A}
18. Rules dj - If Winter Comes, Can Spring Be Far Behind? {HT,T,Y,A,H}
19. Rules dj - Song Birds {HT,Y,T,A}
20. Another Day on the Planet {HT,Y}
21. Rules dj - Double Trouble {HT,Y,T,A}
22. Rules dj - Overload
23. Rules 2nd

??) Dreamers High

Characters:
R = Ryuu
HT = Hikaru Taira
H = Hitomi
T = Tooru
S = Shige
Y = Yuki