Learn English – Shall I use ‘pursue the passion for’ or ‘in’

When I come back home I will make a good impression between students about the college which I pursued my master's degree from.

The sentence is incorrect, e.g. "impression between students".

impression: a strong, favourable, or remarkable effect: he made an impression on the managers.
an effect produced in the mind by a stimulus; sensation: he gave the impression of wanting to help.

So I would say

When I come back home I will make a good impression on students of/about the college in which I am currently pursuing/taking my Master's degree.

(in case you are pursuing it now, and not in the future)
You don't need a comma, except possible after "back home". Commas represent pauses in conversation, so in order to make the text more eligible, you add commas.

For the second question the answer I would say is

When I come back home I will make a good impression on students of the college in which I will have completed Master degree.

No, because all examples describe a future state. (Although in practice, neither would be viewed as inappropriate.**)

All of those examples apply to some possible future event (that, as you say, the speaker is thinking of doing or would like to do, i.e., hearing news, hearing progress, hearing proposals), so the formations as given can be correct.

If they were phrased in the past tense, interested to would be appropriate. For example, if the speaker had already heard the proposals, "I was interested to hear any proposals he might have had" would be a proper statement of his mood after hearing the proposals.

** The speaker could also be considered to be reflecting on a hypothetical future state, so "I would be interested to hear any proposals he might have," meaning "If I did hear any of his proposals, 'interested' would describe my mood" wouldn't come across as incorrect.