I think LII is possible and even more likely than EII. (based on his views on war.) He does not take a definite stance against it but accepts the rationality behind it and wants to minimize the damage and cruelty. I suppose an Fi-Leading type would condemn any form of violence (particularly as Delta Se-Polr).
Not wanting to hurt any more people and thus not befriending them is not type related. That's a form of reasoning that leads back to his insecurities. So I won't take that into account when it comes to typing.
His impatience is uncharacteristic (for LII and EII ) though. Does that come from low self-esteem or is he someone that prefers quick results and decisions?
I know ISFp's that are impatient in the sense that they like to solve problems as soon as they appear. What speaks against ISFp?
I'd like to point out that "hobbies/interests are cooking, fashion, drugs, and video games" also fits to an Si-leading type.
This is from Gulenko's description of SEI:http://wikisocion.org/en/index.php?t...ile_by_Gulenko
Obviously does not fit completely since your friend is very withdrawn. After ILI the SEI is one of the most critical in the socion and uses his Ti as hidden agenda but not as cautious as a LII (his first reaction to disagreement is anger and not a step back to maintain a sense of objectivity). What speaks against Ti-leading is the fact that I don't see any orientation at researching, reading or interests that have a strong TiNe trait. So SEI > LIIThe SEI is usually friendly and pleasant in communication. Very considerate of his own conveniences and those of others. Attentive and caring in relation to his close ones. Often takes the position of the "golden mean" in a work group. Loves beautiful objects and images, and a familiar, comfortable atmosphere.
Emotional, internally attuned to others, responsive. Seeks to cheer up others with jokes, games, witty comments, and clever retorts. Tries not to get drawn into debates and arguments, wants to be in good relations with everyone. Knows how to negotiate with people in an informal environment.
Hides his own problems. Shows courage and optimism. Won't make promises if he's not certain that he will be able to carry them out. Wary of people who are intrusive and who could take away his time.
Works at a pace most convenient to himself. He works productively only if he is working for himself and for the people he's interested in. In other cases, the SEI won't burden himself too much and will try to avoid strenuous expenditures of effort. His productivity is heavily dependent on his mood. Will try to evade boring but necessary work.
@Vespertine Could you give us your opinion on this if you have the time? I don't have enough understanding about Fi to make a competent judgment on whether EII is still a possibility. I think SEI > LII > EII is more likely. The opinion of an actual EII would be very helpful.