Volume 2 contains the spin-off "Moshi Koi da Toshite" (もし 恋だとして) - 4 chapters.; BLink 2012-09~2013-03
Sayonara, Itoshi no My Friend; BLink 2011-03~2012-07
Onizuka-sensei no Okiniiri (鬼束先生のお気に入り)
Moshi Koi da Toshite (If This is Love, Goodbye My Dear Friend)
A man who has been compared to his younger brother his entire life & suffers a trauma from it decides to take a gamble when his young subordinate confesses.