I love ONE OK ROCK . I listen to all their songs
My current favorites are Alexandros and The Oral Cigarettes

Since you like ONE OK ROCK, My First Story should be right up your alley. Check out DROP DOLL. Pretty light poprock. Can't believe anyone haven't mentioned SCANDAL, Do As Infinity, YUI, Flower Flower.

+1 My First Story


 kit1186:
EXILE is pretty good I love their song I Wish

I love EXILE, but it's not rock, it's R&B.

Check out Man With A Mission, My First Story (Younger brother of Taka's One Ok Rock's band), UVERWORLD  

Ms. Green Apple

ling tosite sigure

-one of their members did the tokyo ghoul theme-^^

some of aimer's music

my first story

co shu nie

centimilimental

hello sleepwalkers

OxT

uverworld

+Plus

PornoGraffiti

I love L'arc en Ciel, Phantasmagoria, Laputa, Penicillin, AnCafe, Alice Nine.

Graupel

From the abyss

Fomare

Womcadole

My hair is bad

Yonige

Earthists

C-gate

Oral ciggarets

As promised in another thread here for the start some of my all time favourites:

TsuShiMaMire - all-female-punk-rock for the win with lots of humor :-)
SHOT YOU

Gacharic Spin - all-female-rock/pop...so much musical talent there, my song of the year 2021
MindSet

Chirinuruwowaka - Check out also her first band called Go!Go!7188, they got tons of good songs, too
Link

Thee Michelle Gun Elephant - A classic rock band, after abandoned the singer not has a band called "The Birthday", also worth to check out, similar style
Link

Keep on posting, so many out there that I don't know :-)

Ikimono Gakari and SCANDAL

Sailing before the wind

I'm liking Coldrain lately, I always stuck around to listen to their anime OP songs like "Feed the Fire" (Ousama Game the Animation) and "We are not alone" (Rainbow: Nisha Rokubou no Shichinin)