He is an international terrorist whose specialty is gluing plungers to bombs.
SEND him to headquarters, he has a new assignment!
exclusively, entirely, nothing but
college major, field of study
specialist in xxx ★☆☆☆☆ SARC
someone is a specialist for XXX. In other words, they have a fetish for xxxx. Like デブ専 is a "fat person specialist"
His specialty is TNT, but I esteem his ability to hold his SAKE - he can drink a pint and still UTILIZE a unicycle!