When you meet a new person, you want to make sure you act really nice to them.
Put them first, ensure they know their importance in your life. Let them know that you'd be willing to drop anything for them.

After a few month of this, they may consider themselves to be close to you. Maybe close enough to call you one of their best friends. If this is the case, you've succeeded part 1 of how to make friends.

Over time, you may become more and more close to the person. They have already called you one of their best friends and will continue to grow closer to you until they fall in love with you.

"The next step is to ask them out and if they say no because "I've only known you for like 2 days" then they're wrong and it's their fault they don't want more than friends.
It's good now to blow off steam and rant about this on tumblr/reddit until you make a laughing stock of yourself and just generally blame the rest of western society for your love of fedoras.
Realise that *maybe* it's a bit ridiculous to say that you're right and everyone else is wrong.
NO. You are right. Every one just doesn't understand you. You're a NICE guy and it's their problem if they don't see this and go for guys who treat them bad.
But surely all guys aren't like that? There are other guys you see on the internet who also have an obsession with incest mangas, Stetson Cromwell Crushable fedoras and SAO katanas; they must be nice guys too!
After many days of soul searching and looking at basically clones of yourself on r/niceguys, you realise you've ♥♥♥♥♥♥ up and you need to change.
I'm putting this bit in the middle so Nick doesn't read it immediately and he has gone to the toilet as I type this. You need to help me, he has my family and asked me to add to this while he was gone. I have to obey him, otherwise he'll do bad things....
♥♥♥♥, he's coming back
You go back to this person a week later, apologising and beg them for a second chance. You only shouted at them for an hour and they blocked you everywhere except this one discrete app you both haven't been on for months and you found by searching for her.
She gives you a second chance and you be yourself and you become good friends over many hours of conversation and before you know it, you've been friends for more than a week. That's a personal record!
Congratulations, you now have a friend
can I go to bed now?
I'm ♥♥♥♥♥♥♥ tired
good
gn" -Dom

Anyway, getting back to the task at hand, you have been friends for quite a long time at this point. They'd consider you to be a very close, trustworthy person. That second bit is quite important as we're going to use that with something called "manipulation". Now, I know what you're thinking. But manipulation isn't as bad as the media would have you believe. It's like overclocking your CPU. Everyone claims it will "ruin your CPU", but I have dealt more damage by putting my 10th gen i9 in my microwave so who cares?

Over time, you will feel quite tired of keeping up this persona of a nice, genuine guy. But don't fear, my child. For it is okay. Take a breather. After all, you're friends now, right? They won't care if you say a mean comment or a hurtful thing about their recently deceased grandmother. Not as long as you apologise and promise to change afterwards.
(But don't do this too much, as they may realise they are being manipulated).

So, your new friend has been talking to their other friends (that of which you need to previously specify that they shouldn't be talking to) and they say that your friend needs to get out of there. They tell you this before they block you and you need to think fast. This is what to do in that think fast scenario, without you actually thinking. We do it. You're welcome.

Basically claim that you've been depressed your whole life and that they are the only true friend you've ever had. The key ingredient here is threatening suicide. To really add the cherry on top, post a picture of yourself with something around your neck, albeit a rope, ribbon, hell even a handkerchief will do the trick! Just make it look like it might be going to the ceiling.

Because they are a nice person and aren't fully sure if you're being serious or not, they'll "convince" you out of it and keep being your friend out of pity. They're still there! And they probably won't do it again.

Your new friend is sceptical about these people you've met online. Because you're a open minded person, you're open to new cultures and religions but your friend insists that it's a cult. They only say that because they're bigoted and a closed minded person. Using what we learned earlier, use manipulation to convince her otherwise.
E.g.
That closed mindedness will not be tolerated in our friendship. Now, they've already threatened to leave last time. You are constantly reminded of that by the nasty bruise on their arm

Using the flat earth society as an example, it comes down to people's lack of understanding about basic ideas. Just manipulate facts slightly to somewhat fit with a reason they're not a cult and just a new religion and hey ho pip and dandy!
Now, you're probably saying that it's easier said than done, and granted that is completely true. But this is a tutorial, not a.... slightly worse tutorial. We know what we're talking about and we're passionate to help others achieve that goal. That's why we're here today.

You will arrive at the time and place decided by your new group of religious folk on the internet chatroom. They all wear white and talk in riddles. They also talk with perfect english. Whilst you and your friend are a little intimidated by these but we are not closed minded people. You go into their underground temple. On the ground is some red substance. They ask for a sacrifice.
As established before, you would drop everything to ensure your new friend is happy and safe. So that's why, this is one of those moments you decide to drop the nice guy persona and volunteer them to be the sacrifice.

On the chat room, the ritual was discussed before. However, they didn't mention that the sacrifice wasn't human. They express this, and you try to play off the look your friend is giving you. Now, here they say that "but Human will do just fine, perhaps better." and drag your friend up to the table. When they start speaking latin with hoods over their heads is when you wish you didn't drop latin and bolt. This is the 3rd time this has happened with a new friend and perhaps next time, it won't happen again. Maybe.
It depends on the next group of religious folk.

So, you've just completed the homicide run. Now, I know what you're thinking. "But all my peers have friendships that don't involve any 'manipulation' or 'cults'"
Yeah, well easy, little one. Don't run before you can walk. The pacifist run for friendship is a much harder route and it's only for pros.
Don't be afraid to dabble in manipulation as it is a useful tool in the art of friendship!

Other routes in order of difficulty:
Homocide route (this one)
More than friends? [COMING SOON]
Getting to second base [♥♥♥♥♥♥♥ SOON]
Dating route [COMING SOON]
I hear wedding bells! [COMING SOON]
LA divorcee [COMING SOON]
well, you got this far [COMING SOON]
pacifist route [COMING SOON]