I have a few photos - 3 of Ni-chome and two general taken over the years. You are welcome to use any.
I do think any Guide to Tokyo should mention two other entertainment outlets - saunas and host boy bars. There are now many restrictions on foreigners in most of the gay saunas - i.e must be under 40 and so on - but the 24 chain with its 3 saunas in Asakusa (not to be confused with the more central Akasaka!), Ueno and Shinjuku Ni-chome happily welcome everyone. The one in Shinjuku is large and very popular on week-ends with a good variety from students to older chubby guys. Walking around the large bathing area and the adjacent corridors linking the steam rooms, rain shower room, private showers and sauna you can see some great eye candy! Ueno is also worth the 15 minute or so walk from Ueno station as there are often hunkier, more working class types. The original 24 in Asakusa - near the famous Senso-ji Temple - has more older guys, but you will still find some younger. You will not always be successful but it can provide a great afternoon or evening.
Check out the thread "Suggestions Please" about arsenal's forthcoming holiday. He has decided to go to Japan. There are photos there of the offerings to be had in Japan's many gay host bars. They will not be everyone's cup of tea, but the range of gorgeous guys is quite staggering if you are into thinks. I am sure there are others with beefier types.
I am attaching some photos which you are welcome to use without attribution if you so wish.
Shinjuku_Main_Street_Scene.jpg
Shinjuku_Main Avenue
Bar_Signs_in_Ni-chome.jpg
Bar Signs in Ni-Chome Building
Host_Bar_Signs_Ni-chome.jpg
Host Boy Bar Signs in Ni-chome
24_Sauna_Ni-chome.jpg
Shinjuku 24 Sauna
Tokyo_C.jpg
Senso-ji Temple in Asakusa
And of course there are the apps. Guys in Japan have taken to them the same as everywhere. Hornet, Grindr and Jack'd all work well for Japanese looking for foreigners and many guys still use Gay Romeo - and even Gaydar. No doubt this is one reason for Ni-chome becoming less popular as a hook-up centre as it is now in general more a place to have a night out with friends.