Attack!! Hiroko-chan

About
Attack!! Hiroko-chan was Champion Soft's first adult game. The actual adult content are two CGs which are variants of each other.

Interestingly enough this game was also released on the PC-6001mkII which had a speech synthesis unit. Making this the first voiced Alicesoft related game. Technically.

Story
The main character receives a letter from his pen pal Hiroko-chan. It states: "I'm in the girls' dormitory at summer school. Please come now that my strict father isn't around!"

And so our hero sets out...

Gameplay
It's an adventure game which requires either pressing a button for a command or typing it out. The actual game itself is entirely RNG based.

Walkthrough
The game is actually just an RNG game. First you have to pick a direction to go, if RNG is in your favour you'll end up at the dormitory.

Then you have a randomized 3 digit code. This, whilst RNG based, gives you hints if you need to go higher or lower as well as 20 tries. Quite doable.

After that you come in the reception/guard room and have to find a key, the location and amount of keys are randomized and you get 4 tries.

Now you are in front of some doors, pick the right door using the previously found key and you'll find Hiroko-chan, there's also 1 room with an alcoholic girl.

Now you're in Hiroko-chan's room and have to answer 2 quizzes on her and your hobbies. You get 3 tries and once again the correct answers are randomized.

According to a Japanese guide's calculations the chance of clearing the game is 2.4%

The PC-88 has a cheat/bug you can use to skip the RNG. Instead of typing in answers, you can type in 円 (GRPH+￥). Apparently moment 2&4 required 円 円 円, but I only used it on 2 and got through it. The rest can be 円.