(prepare yourself I will rant a loot :P)
Toma is extremely lovable and nice person so it is not suprising a lot of people want be close to him. But as he said he considers just 3 people as his best friends-Shun, Jun and Yamapi :3 (ofc I he also said he has good friends with non-celebrities too) and he truly cherish them.
As Tomarashian any Toma’s interaction with Arashi is making me fangirl like crazy. XD I really love how Toma changes mood in Arashi’s bangumis. (I love DoS Jun towards Tomacchi XD ) I know it must be difficult for young Tomacchi when Arashi debuted, and how much he was hurted but I love to seeing him satisfied and happy as he is now :) I adore how he see Arashi as senpais-friends and wants support them.
Shun was the 1st person I get to know as Toma’s friend. Hana Kimi is unforgetable for me (and so is Ouroboros) :3 These two are perfect example that even person you dont like at firs glance can become your best friend :) They are so close that Toma cares (sometimes) about Shun’s daughter.
Unfortunatelly I was not fan during Tomapi or 4TOPS/3TOPS era. But I really do think Toma cares a lot about Pi. He treasures him a lot even they do not appear together on TV. They still support each other. It would be nice if they colaborated again somewhere tho :)
What I admire about Toma. he loves his lil-bro Ryuusei a lot and has very good relationship with him (omg what is more perfect than Ikuta bros? Ikuta bros togetheeeer!!) Toma, even he is busy always finds time for with him and for his little niece :3 :3 :3
Sorry for loong post :P at least enjoy my collage :3 (you can let me know who do you like to see Toma with :) )