Sequel & Spin-off

Part 1
Keiji x Hiro

Part 2 (spin-off)
Kaoru x Hara

Part 1
Shouhei, has a rabbit allergy (turn out to be grass allergy)
Mito Itsuki, grandson of a rabbit specialist shop

Part 2
Shouhei x Mito Itsuki

Part 3 (spin-off)
Minato x Shizuma
Shizuma, Shouhei's older brother, girlfriend cheated on him so they broke up causing him to get drunk and sleeping together with Minato
Minato, Mito's younger brother, tries to make Shizuma fall for him and then dump him to show that he can make straight guy fall for him

Part 1
Kirishima x Toudou
Kirishima misunderstood that Toudou and his brother was going out and told Toudou that instead of his brother he can do him instead cuz anyone was okay and Toudou gave him a handjob but stop before anything went further and said that he was just teasing

Part 2
Hokuto x Suzuki

Part 3
Kirishima x Toudou

Part 1
Masaki x Hiromu
- Omega x Alpha

Part 2
Masaki x Hiromu