Volume 1: first year
Volume 2: Konosuba
Volume 3: second year
Volume 4: ???
Volume 5: Third year
Volume 6: Fourth year
Volume 7: ???
Volume 8: Fifth year
Volume 9: Danmachi
Volume 10: DXD Canon
This is what I have planned for the harem as of now but it will change as I progress. Also due to the world travels the MCs age will change so r-18 chapters may be introduced into that volume.
Volume 1: first year
Helena Potter
Lyra Malfoy
Hermione Granger
Susan Bones
Lavender Brown
Artoria Pendragon
Scàthach
Kuroka toujou
Volume 2: Konosuba
Aqua
Megumin
Darkness
Eris
Yunyun
Wiz
Luna
Volume 3: second year
Daphne Greengrass
Tracy Davis
Luna Lovegood
Ginny Weasley
Pansy Parkinson
These will be in the harem but I don't have an idea on which volume I'm going to do.
Narcissa Malfoy
Bellatrix lestrange
Nymphadora tonks
Rias Gremory
Sona sitri
Serafall
Asia argento
Tsubaki shinra
Momo hanaki
Tsubasa yura
Reya kusaka
Tomoe meguri
Koneko toujou
Valerie tepes
Meredith Oriditon
Yasaka
Rosswiese
Akeno himajima
Aika kiryuu ( pervert girl)
Murayama ( kendo girl)
Katase ( kendo girl)
Gabriel
Maybe
Raynare
Kalawarner
Mittlet
I'll also take comments on what worlds you would like to see. Leave a vote please.
Volume 4
Volume 7