Well, this is a nice surprise, I came back to Adventurer Trainer when 0.1.5 was out and Pastry made the Protagonist Kazuma, plus more awesome content as seen in both 0.1.5 and 0.1.6. Looking good so far and looking forward to more. Especially since it is Kazuma going lewd route and more importantly Harem that seems more like a Polycyle route.
as for new girls to be added when Pastry is able to do this, obviously Yunyun route, Wiz route, Luna route, Rin route, Ghrislane the Blacksmith route are good ideas. Sena getting a route down the line is good. Oh that reminds me, Fantastic Days has the Axel Hearts Performers which are Lia, Erika and Cielo, Melissa the Treasure Hunter ranger, Amy the beastkin, Melu/Meru the Lightning Spirit. those could be options to consider, but as a "it would be cool to EVENTUALLY have them in Adventurer Trainer, not a must have" and not a "if yuz don'tz add deez stuffs in game nowz, me angy!" sort of comment.
almost forgot about the Konosuba Movie, the Demon General introduced there called Sylvia the Growth Chimera could be a good addition later. and since she has the ability to use Tentacles, that can offer loads of scenarios for this Hentai game, like Tentacle shibari mode, or simply holding Kazuma with her Tentacles when she rides him and also standing blowjob and using her tentacles to hold him up fir the BJ(she is a tall woman) sort of stuff. you could probably also use her for Shapeshifter type content, which could include changing her three sizes of Bust, Booty and Hips and probably have abilities that allow her to change appearance and even species on the fly, shapeshifter offer loads of ropelplay potential after all.
Hm, did anyone else recommend anything similar? look at page 11. . . .
Non-futa?
You are literally asking for a sylvia with no purpose.
. . . incorrect. We have a Shapeshifter that can consume materials to change forms, meaning taking and removing parts as well as consuming monster material and artifacts to turn into Monster girl and Magi Tech Gynoid from Artifacts. but no, you just want the gag of Kazuma's second traumatization to continue.