giyuu starts to feel a weird feeling around his collage obanai iguro. soon though obanai and mitsuri start dating. giyuu is happy for mitsuri but soon starts to feel envy as he sees them together more and more. but soon he gets hanakai disease and starts to cough up flower petals. he soon goes on a mission to which something pretty bad happens. but soon tengen uzui starts to befriend giyuu and falls for him. will giyuu return his feelings? or is he still in love with obanai?