same universe

1). Endou-kun no Kansatsu Nikki
Tsuda x Endou in high school

2). Imamade Korekara
side couple compilation in same universe

3). Kurayami ni Strob / A Strobe in the Darkness
Shoutarou Miyamoto (basketball player) x Arata Sakaki (photographer)

4). Endou-kun no Jikken Note
Tsuda x Endou in university

5). Utsusemi ni Akari (strob Spin-off)
adult Sawayama x Hase

6). Hai ni Mabataki
Kanzaki cameo (hair dresser)

1). Cupid ni Rakurai
(kohai x senpai)

2). Kanshaku Dama no Love Song
(rival spin off)

3). Natsuhate no Unknown
(childhood friends spin off)

1). Renai Nante Yurushimasen! (I won't Allow Romance)

2). Renai Nante Itashimasen!
((younger brother spin off))

3). Netsuai Nante Ariemasen! (Deep Love Is Impossible)

4). Dekiai Nante Mitomemasen! (I Won't Admit To Doting)

5). Saiai Nante Yuzurimasen! (I Won't Give Up My Dearest Love)

6). Ore no Itoshi no Neet-kun
(( separate story with reoccurring side character (John from brother spin off ))

Vol 1 Warui Koto Shitai [1-1]
Vol 2 Waruiko Demo Ii? [1-2]
Vol 3 Kirai ja nai Kedo [2-1]
Vol 4 Koi Ja nai Kedo [2-2]
--- Warui Koto Bakkashite GomenNasai [1-3 &/ 2-3]
Vol 5 Warui Yatsu Demo Ii [1-4]
Vol 6 Mujihi na Otoko [3-1]
Vol 7 Warui Koibito ja Dame? [1-5]
Vol 8 Kare ja nai kedo [2-4]
Vol 9 Mujihi na Anata [3-2]
Vol 10 Sunao ja nai kedo [2-5]

1). Puchitto Hajiketa

2). Porotto Koboreta

3). Korotto Ochita?