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Days after a heart-fluttering encounter with a charming man, Yu Na-bi bumps into him again. This time, she's formally introduced to Park Jae-eon.

As Na-bi wonders whether Jae-eon only acts friendly toward her or also to other girls, she has a racy dream about the two of them in bed.

A cold, some jealousy and a slight misunderstanding drive Na-bi and Jae-eon further apart before bringing them closer than ever before.

Na-bi's attraction to Jae-eon is enough to momentarily quiet her concerns about their intimate relationship — until a rude awakening sets in.

Sick of Jae-eon's ways, Na-bi ends things with him. Oh Bit-na makes a drunken confession. Yun Seol-a approaches Na-bi on campus.

Na-bi visits her hometown, where she helps out in her aunt's studio and enjoys the outdoors with Yang Do-hyeok. Jae-eon feels Na-bi's absence.

The students arrive at the guesthouse for a group retreat. Na-bi tries to keep a distance from Jae-eon, who keeps his eye on her and Do-hyeok.

Do-hyeok surprises his childhood crush with a sweet confession. Na-bi visits a gallery with Jae-eon. Yun Sol gets honest about her feelings for Seo Ji-wan.

Afraid to lose Na-bi, Do-hyeok shows up in front of her building — only to see Jae-eon by her side. Sol allays Ji-wan's fears about their relationship.

Na-bi scrambles to recreate her sculpture days before the exhibit. Staying true to his word, Jae-eon bids farewell to his butterflies.