MIMK-187 _The kind teacher and the female student Sasaki Saki

Nozomi (Saki Sasaki) is a beautiful but quiet schoolgirl since her parents divorced. Nozomi's biggest passion is playing sports, she likes tennis the most. Perhaps for this reason, Nozomi's academic performance is not very good. Tony is an elderly teacher next door to Nozomi. He accidentally learned about her situation so he offered to tutor Nozomi to help her improve. Everything went according to plan, with Tony's help Nozomi's academic performance improved significantly, but what was the main purpose of Tony approaching Nozomi?