Adult PC Game: The Truth is Nothing but Lies v.0.5 Part 3 by Albatrozz Win/Mac/Android Archive

A man who, like a supporting character, forgets his past. He awakens in an unknown room, confused and enraged. He wants to learn about his past and find out who exactly is he. To discover the true answer, he starts living from what he left behind. Being a professor in an all-girls academy with teaching methods in his own wa-
“Brother, what are you doing?”
“I'm writing a daily diary…”
“I didn't know you would have a hobby like this.”