したshitau
1.

To feel a deep emotional attachment to someone or something, experiencing a sense of longing and nostalgia for their presence or influence in one's life.

2.

To pursue or follow someone closely because of a heartfelt desire to remain near them, often accompanied by a sense of sorrow in their absence.

3.

To hold someone in high regard due to their intellectual or moral qualities, aspiring to emulate or learn from them.

4.

To keep the memory or image of someone alive in one's heart, continually reflecting on and cherishing their essence even after they are gone.

Example:

少女は叔母をとても慕っている。

koiしたshitau
1.

To feel an intense longing for someone, accompanied by a desire to be close to them, often driven by deep emotional ties.

2.

To experience a profound sense of nostalgia or affection for someone, characterized by a yearning that may be kept secret or unexpressed.

3.

To have an overwhelming desire to be reunited with someone, marked by feelings of love and an inability to suppress the wish to be near them.