Three highschool heartthrobs looking for that missing piece for their band

The school's band looks for their vocalist~

Just a weirdo

A highly energetic teen from a samurai family, he loves training with his wooden sword every day, his loyal and very social but get nervous around pretty girls, he´s 17 years old and has never dated before. He lives with both of his parents and his 5 younger siblings, he´s the oldest sibling, his family isnt rich but they have a stable economy.
His world is a oriental historical kind of story with no modern technology.