KSBJ-340 - My fiance's father was my first love teacher... Kuramoto Sumire

So, the father of her fiancé was her first love back in elementary school…? Is that even possible? Honestly, the chances of running into someone at a drinking party or karaoke are much higher than running into your fiancé's father while paying your respects. The story feels forced and contrived. Kuramoto Sumire plays a married woman, but the whole situation feels so awkward. The writing lacks depth.