Ore no Mune de Sake

From Fantasy Shrine:
“Your flowers are lifeless!” accuses the world-famous flower artist, Hikawa Naoki. Facing such merciless criticism, Kaede, heir of the prestige Akizuki flower arrangement school, has never been more humiliated in his life. Thinking his younger twin, Momiji, is more blessed with love and talents, Kaede reluctantly agrees to go to Hikawa for inspiration. However, under the elegant, masterful instruction of Hikawa, is a lesson of love disguised in seduction! And Kaede’s body and heart are awakened by love and desire…!?