1-2, 7. Elf-ka no Kusuri (エルフ化の薬)
 3-4. Mesugaki Elf ni Natta Touryou (メスガキエルフになった頭領)
 5. Maou ni Maketa Yuusha ga Succubus to Shite Jinsei wo Ouka Suru Hanashi (魔王に負けた勇者♂がサキュバスとして人生を謳歌する話)
 6. Maou ni Katta Yuusha ga Succubus ni Ochiteiku Hanashi (魔王に勝った勇者がサキュバスに堕ちていく話)

"...Such strength, it would be a shame to let it go to waste." "Better that you act as my servant..." The hero Alma has fallen in battle against Demonarch, the devil lord. When he comes to, he's completely naked and abandoned in a cave. Worse still, he's a female body—that of a succubus—and reset to level 1 as added torment. Astonished and bewildered, yet unbroken, he/she pushes forward and seeks salvation from a fellow adventurer, but with his/her succubus skill ""Charm"" acting out of control, things start to heat up as they make their frantic escape! After Alma's powers suddenly well up, he/she tries to shake off a fellow adventurer, when a look at his/her character stats has even more surprised: simply having sex gives a drastic level-up...!? Alma then sets off on a different kind of level-grind, in hopes to challenge Demonarch once more. Until at last...
 
(Source: Fakku!)

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