Be Sweet, Kiss Me, and Make Me Melt

"But I want to be kind to you, because I like you, Ms. Jun." He presses his lips against hers, teasing her with his tongue... Jun Hongo is always getting work pushed onto her by her boss and colleagues. She believes if she manages it, she'll feel needed by others. She knows she has a self-sacrificing personality but continues to take on work, doing overtime every day. But one night things change when Jun's mentee, Noze, decides to help her with her overtime work...

(Source: MangaPlaza)