Kamidori was an anomaly. The vast majority of Eushully's stuff (including this game) has some degree of rape and otherwise non-consensual activity. I think Tayu Uta is the only other one that's pretty much rape-free.
Yes you are. Only Alchemist Meister and Mine Fukaki Se ni Tayutau Uta are 'softcore' amongst Eushully's work. Those two are considered the only 'pure' games. The company also has a few work that is labelled 'Black Eushully' games, which are purely about rape. Look up Meishoku no Reiki and Himegari Dungeon Meister. The company is really more known for its amazing gameplay, where a lot of them actually have a lot of creativity.