Super Erect Taisen S-EX (1995)

You begin with the main hero and 3 girls and battle through 15 SRPG style stages, using their school as a home base between battles. At the school, you may buy items, change party members, and speak to girls on your team. After each stage, a new girl will join you, and, in total, there are 19 girls. Each girl has at least one H-scene.