Bishonen means pretty boy in Japanese language. Bishujo means cute girl. In Japan bishonen look for boys and men is wildly popular since 60s among girls and women. Clean shaved look on men and boys is what ladies crush on. Rest of east Asia this is the beauty standard for males. In Japan, it is seen as rude and ugly for males to keep beard so males prefer not to keep it. This bishonen look is reflected on all the animations be it art,comics or cartoon. It is reflected in men's fashion and culture. It doesnot however mean the bishonen is an indirect or direct indication of male effiminacy, homosexuality or bisexuality. No. Straight men in Japan and east Asian countries take up this look because IT IS their norm. You see Ayami Kojima's men in Original Castlevania art has no beard is because thats HOW they like it in Japan.
To all the weirdos who tag beardless men of anime with homo or bi stuff at the drop of a hat, let us tell you.... the world ISNOT your bloody America and things ARE NOT how you think outside your country. Remember that.