today, as usual, i was diligently playing games with my best friend in the club room. but suddenly, my classmate rina-san came... what is this girl doing, saying things like "let's go home" and "let's drink alcohol"... and what's more, she's showing me her panties in a lewd way... ugh. i don't know where to look... i thought, but then i realized, isn't this girl trying to seduce me!? it must be, she's been looking at me this whole time! what is this! when i thought she was making fun of my modest son, she gave a sex lecture using ryuta, a sex addict, as an example. what's suddenly happening? what's going to happen to my student life!? !?