Short, often silent, chapters that come at the beginning of most issues.

Issues:
01 TAKAHASHI Natsuko (February 2013)
02 SHITARA Kiyoto (March 2013)
03 Itou Senhon (?) (April 2013)
04 KUI Ryoko (May 2013)
05 UNOSHIMA Yoh (June 2013)
06 FUTAMI Hiro (July 2013)
07 Ookubo Akiyo (August 2013)
11 TAKAESU Yaya (February 2014)
14 NAKAMURA Tetsuya (May 2014)
15 RASHIDA Sawako (June 2014)
16 SAKURA Sawa (July 2014)
17 KASAI Sui (August 2014)
18 MARUYAMA Kaoru (October 2014)
19 OHTAKE Masao (November 2014)
22 TOMI Akihito (March 2015)
23 TAKAHASHI Natsuko (April 2015)
24 Kimura Minami (May 2015)
26 KIKUCHI Mariko (July 2015)
27 TAKAESU Yaya (August 2015)
29 MIYATA Kouji (November 2015)
30 Matsumoto Yuki (December 2015)
31 UTSUGI Tetsuo (February 2016)
33 Shin Michiko (March 2016)
34 WADA Takashi (May 2016)
36 YAMAMOTO Lun Lun (July 2016)
37 Fukuta Seira (August 2016)
39 KAWADA Daichi (November 2016)
40 Ootsuki Ichika (December 2016)
42 比嘉史果 HIGA Fumika (March 2017)

Related:
https://bato.to/comic/_/comics/fellows-cover-stories-r20644

In the latter half of the Edo period...
In a narrow tenement in the humid heat of midsummer, two men exchange heated sighs as they have intercourse.
A former kagema, a male prostitute, Momoki, was picked up by Manji one rainy day.
The times that Manji spends treating Momoki not as a kagema, but gently, lovingly, holding him as a lover, are much like a dream.
To Momoki, those days are filled with happiness, no matter what may have happened in the past.

A manga anthology based on DMM and Nitro+'s browser game Touken Ranbu -online-http://www.akitashoten.co.jp/comics/4253153151