I'm fine with a 3 year gap between couples but he's still in high school so idk how to feel about him dating an adult even though the age of consent is 16 in Japan...
Yeah I saw people in the previous chap like "oh shit is he 30" meanwhile I was like nah probably just someone who cares about a distinction of minor, and yeah. I don't blame him 20 does definitely feel more sus than being like barely 18, but in the end it's probably just fine, older teen on cusp of adulthood + baby adult.