"Namaiki."

Sakai Kazuya, a 23-year-old man, finds himself in love. However, the woman he admires only has eyes for well-educated men. Sakai, who didn't finish high school and has relied on physical labor to get by, decides to change. He seeks help from her younger brother, Izumi Masashi, to pass the high school entrance exam, aiming to transform into a more learned individual. Izumi agrees to assist but demands a very high price. Interestingly, Izumi isn't after money; he has his sights set on other assets of Sakai's... (Source: 801 Media)