Possibly the maddest shooter of all time
Thanks to Nintendo making imports available on the Virtual Console, you've probably come across Chō Aniki: a shooter on the PC Engine in the same mold as Gradius and other side-scrollers, but with some rather unconventional enemies and a lot of muscles. You may be less familiar with this sequel, which was...
Ai Cho Aniki which translates to "Love Super Big Brother" — was developed by Masaya and also released for the PC Engine.
In this game, players controlled Samson and Adon directly. A key difference in the control scheme of Ai Cho Aniki is that instead of rapidly pressing buttons as a means of firing at enemies, players now had to input intricate button combinations, Street Fighter-style. By and large, Cho Aniki and Ai Cho Aniki play very similarly.