Чиба-кун из моего города

High school teacher Onodera Machi, 27, evaluates love based on status and income, aiming for a stable marriage. When transfer student Chiba Yuto, the spitting image of her first love, Yuichi, joins her class, she finds herself drawn to him despite their age gap. Things get more complicated when she reunites with Yuichi at a drinking party. Torn between the allure of the younger brother and the nostalgia of her past love, Machi faces a thrilling love triangle between "instinctive love" and "promised love." (Source: MyDramaList) ~~ Adapted from the manga series "Watashi no Machi no Chiba-kun wa." (私の町の千葉くんは。) by Okamoto Tokasa (おかもととかさ).