じかjikani
1.

In a manner that involves no intermediaries, allowing for an immediate and unmediated connection or interaction.

2.

Without delay, indicating an action or event occurring almost instantly or in the near future.

3.

In a straightforward or unembellished way, emphasizing clarity or simplicity in the way something is expressed or performed.

Example:

あなたとじかに会ってじっくり話したいことがあるのです。

じきjikini
1.

In a manner that avoids any intermediaries, conveying actions or communications straight to the intended recipient without involvement from others.

2.

Referring to an action performed without delay or hesitation, emphasizing an immediate or prompt response to a situation.

3.

Describing a situation where something is done in a straightforward or uncomplicated way, without any obstructions or deviations.

Example:

クリスマスがじきにまためぐってくる。